Document:

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                                                                    Exhibit 10.2

                      FORM OF STOCKHOLDER LOCK-UP AGREEMENT

         THIS STOCKHOLDER LOCK-UP AGREEMENT ("Agreement") is made effective
as of March 25, 1999, among American Mobile Surgical Services, Inc., a
Florida corporation ("AMSS"), U.S. Medical Group, Inc., a Nevada corporation
("USMG") and the undersigned stockholder ("Stockholder").

         USMG and AMSS are party to an Agreement and Plan of Merger, pursuant to
which AMSS will merge with USMG Acquisition Corp., a Florida corporation and
wholly-owned subsidiary of USMG (the "Merger"). Pursuant to the Merger, holders
of AMSS common stock will receive 10,000,000 shares of USMG common. As a
condition to receipt of the Merger Consideration, each holder of AMSS common
stock is required under the Merger Agreement to execute this Agreement.

         As used herein, the term "Restricted Stock" means (i) all USMG common
stock included in the Merger Consideration, (ii) all USMG common stock issued as
a dividend on, or in exchange for or conversion of, the foregoing.

         In consideration of the mutual promises, covenants and conditions set
forth below, the parties mutually agree as follows:

         1.   RESTRICTED STOCK BOUND. All shares of Restricted Stock acquired by
Stockholder in connection with the Merger shall be subject to the terms and
restrictions set forth in this Agreement. No shares of Restricted Stock may be
transferred by Stockholder in any manner except in strict accord with the terms
of this Agreement.

         2.   LOCK-UP. The Stockholder agrees not to effect any sale or transfer
of the Restricted Stock until the one-year anniversary of the Merger.

         3.   STOCK HELD BY ESCROW AGENT. To ensure compliance with the terms of
this Agreement, the share certificates representing the Restricted Stock shall
be deposited with Blair & Roach, counsel to USMG, as escrow agent (or a
substitute escrow agent selected by USMG), until the one-year anniversary date
of the Merger.

         4.   AMENDMENT. This Agreement may be amended or modified only by a
written instrument executed by the parties hereto.

         5.   WAIVER. Any provision contained in this Agreement may be waived,
either generally or in any particular instance, by TransGlobal Financial
Corporation.

         6.   SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon and
shall inure to the benefit of the parties and their respective successors and
assigns.

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         7.   GOVERNING LAW. This Agreement shall be governed by the laws of the
State of New York.

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date first written above.

AMERICAN MOBILE SURGICAL SERVICES, INC.,    U.S. MEDICAL GROUP, INC.,
 a Florida corporation                      a Nevada corporation

By: /s/                                     By:  /s/
   ------------------------------------        -------------------------------

Title:                                      Title:
      ---------------------------------           ----------------------------

                                       2<PAGE>

                                                                    Exhibit 10.3

REGIONAL
OFFICE                                                  Governor
                                                        LAWTON CHILES

                                                        Secretary
                                                        HARRY K. SINGLETARY,JR.

5700 S.W. 34nd ST., Suite 335 - Gainesville, FL 32608-5373 -
Telephone: (352)955-2035

REGION II

November 19,1997

American Mobile Surgical Services, Inc.
Attn: Sandy Thompson, RN, LHRM
Post Office Box 560699
Orlando, Florida 32856-0699

RE: Contract Number 09208- Cancellation
Mobile Surgery Services- North Florida Reception Center

Dear Ms. Thompson:

This is to advise that the above referenced contract is hereby cancelled
effective midnight November 11,1997. Contract number 09214 became effective
November l2,1997 and replaced the existing contract number 09208.

Mobile surgical services at North Florida Reception Center will continue under
the new contract number 09214.

Sincerely,
J. S. Petrovsky
Regional Director

JSP/JLM /sgr

cc: Bob Torrescano
Steve Smith
Accounting
Comptroller

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                                                               CONTRACT # 09214
                                                                       --------
1/97 AGENT

                              CONTRACT BETWEEN THE

                            DEPARTMENT OF CORRECTIONS

                                       AND

                     AMERICAN MOBILE SURGICAL SERVICES, INC.

This contract is between the Florida Department of Corrections (hereinafter
referred to as the "department") and American Mobile Surgical Services, Inc.
(hereinafter referred to as the "contractor") which are the parties hereto.

                                   WITNESSETH

Whereas, the department is required by Section 945.04, Florida Statutes, to
ensure that all inmates are provided care, custody, treatment, housing and
general handling in accordance with Florida Statutes;

Whereas, it is necessary that budget resources be allocated effectively;

Whereas, this contract is a result of statutory exemption, and;

Whereas, American Mobile Surgical Services, Inc. is a qualified and willing
participant with the department to provide Mobile Surgery services for the
department's inmates.

Now, therefore, in consideration of the agreements contained herein, the parties
agree:

I.  CONTRACT TERM/RENEWAL

         A.   Contract Term

              This contract shall be for a term of three (3) years and shall be
              effective on October 1, 1997, or the date signed by both parties,
              whichever is later. This contract shall end at midnight on
              September 30, 2000.

         B.   Contract Renewal

              This contract may be renewed, at the option of the department, for
              two (2) additional one (1) year periods) after the initial
              contract period upon the same terms and conditions contained
              herein and at the renewal prices indicated in Section III,
              Compensation. The contract renewal is at the department's sole
              discretion and shall be conditioned, at a minimum, on satisfactory
              performance evaluations by the department and subject to the
              availability of funds. The department, if it desires to renew this
              contract, shall exercise its option no later than sixty (60) days
              prior to the contract expiration.

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                                                   CONTRACT #
                                                           --------------------

II. SCOPE OF CONTRACT

         A.   Administrative Functions

              The department will not furnish support services (e.g., support
              staff, office space, telephone services, secretarial or clerical
              support) to the contractor.

         B.   Responsibilities of the Contractor:

              American Mobile Surgical Services, Inc. will provide on-site
              surgical, services. Contractor agrees to meet all State and
              regulatory requirements. AMSSI (American Mobile Surgical Services
              Inc.) will provide a Mobile Surgica.l Unit at North Florida
              Reception Center including all equipment, instrumentation and
              supplies. AMSSI will provide staff within the unit to include one
              Operating Room Supervisor/Circulator and one Surgical
              Technician.( NFRC will provide one Registered Nurse for the
              Recovery Room and one Registered Nurse for the Pre-op Area. In
              addition, NFRC will provide linen services, utilities, and
              laboratory services such as, stat labs and pathology.) AMSSI will
              provide all types of surgery including General, Orthopedic,
              Colorectal, ENT, Podiatry and Urology.

         C.   Department Responsibilities:

              1.   The department will provide, at its expense and judgment, a
                   sufficient number of Correctional Officers to supervise those
                   inmates receiving services by the contractor

              2.   Clinical issues involving medical care rendered by the
                   contractor shall be resolved jointly by the contractor and
                   the Regional Health Services Director, Region II.

              3.   The department will provide the contractor with access to all
                   department rules and regulations. In addition, any changes
                   impacting the contractor and how services are delivered will
                   be made available to the contractor

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                                                   CONTRACT #
                                                           --------------------

III. COMPENSATION

         A.   Payment

              The department will compensate the contractor at the following
              rates:

                  Compensation per the attached fee schedule. All surgeries
                  in excess of fifty(SO) in each month will be billed at a
                  10% discountfrom these rates. These charges do not include
                  the cost of the Durable Medical Products such as hardware
                  used in some of the procedures. There will be a separate
                  charge for such hardware.

         B.   Submission of Invoice(s)

              The contractor agrees to submit invoices for compensation for
              services in detail sufficient for a proper preaudit and postaudit
              thereof, as follows:

              a) Contractor's name and mailing address
              b) Date service rendered
              c) Inmate number
              d) Inmate name
              e) Name of facility
              f) Service rendered
              g) IRS number
              h) Amount of charges as per contract.

              The contractor shall submit invoices pertaining to this contract
              to:
              Bob Torrescano, Hospital Administrator
               Florida DepartmentofCorrechons
               Post Office Box 628
               Lake Butler, Florida 32054
               (904) 496-6111

         C.   Official Payee

              The name and address of the official payee to whom payment shall
              be made is as follows:

               American Mobile Surgical Services, Inc
               Sandy Thompson, RN, LHRM
               P. O. Box 560699
               Orlando, Florida 3Z8S&0699
               (407) 849-2288

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                                                   CONTRACT #
                                                           --------------------

         D.   Travel Expenses

              The department shall not be responsible for the payment of any
              travel expense for the contractor.

         E.   Contractor's Expenses

              The contractor shall pay for all licenses, permits, and inspection
              fees or similar charges required for this contract, and shall
              simply comply with all laws, ordinances, regulations and any other
              requirements applicable to the work specified.

         F.   Annual Appropriation

              The State of Florida's performance and obligation to pay under
              this contract is contingent upon an annual appropriation by the
              Legislature. The costs of services paid under any contract or from
              any other source are not eligible for reimbursement under this
              contract.

         G.   Tax Exemption

              The department agrees to pay for contracted services according to
              the conditions of this contract. The State of Florida does not pay
              Federal Excise and Sales taxes on direct purchases of services.

         H.   Interest Penalties

              Payment shall be made in accordance with Section 215.422, Florida
              Statutes, which states the contractors rights and the department's
              responsibilities concerning interest penalties and thmne limits
              for payment of invoices.

         I.   Timeframes for Payment

              Vendors providing goods and services to an agency should be aware
              of the following time frames:

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                                                   CONTRACT #
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              1.   Upon receipt, an agency has five (5) working days to inspect
                   and approve the goods and services and associated invoice,
                   unless the bid specifications, purchase order or contract
                   specifies otherwise. An agency has twenty (20) ,daysto
                   deliver a request for payment(voucher)to the Department of_Bg
                   and Finance. The twenty(20) days are measured from the latter
                   of the date the invoice is received or the goods or services
                   are received, inspected and approved.

              2.   If a payment is not available within forty (40) days, a
                   separate interest penalty, as specified in Section 215.422,
                   Florida Statutes, will be due and payable, in addition to the
                   invoice amount, to the vendor. The interest penalty_provision
                   applies after a thirty-five (35) day time period to health
                   care providers, as defined by rule. Interest penalties of
                   less than one (1) dollar will not be enforced unless the
                   vendor requests payment. Invoices which have to be returned
                   to a vendor because of vendor preparation errors will result
                   in a delay in the payment. The invoice payment requirements
                   do not start until a properly completed invoice is provided
                   to the agency.

         J.   Final Invoice

              The contractor shall submit the final invoice for payment to the
              department no more than forty-five (45) days after acceptance of
              the final deliverable by the department. If the contractor fads to
              do so, all right to payment is forfeited, and the department will
              not honor any request submitted after aforesaid time period. Any
              payment due under the terms of the contract may be withheld until
              all applicable deliverables and invoices have been accepted and
              approved by the department.

         K.   Vendor Ombudsman

              A Vendor Ombudsman has been established within the Department of
              Banking and Finance. The duties of this individual include acting
              as an advocate for vendors who may be experiencing problems in
              obtaining timely payment(s) from a state agency. The Vendor
              Ombudsman may be contacted at (904) 488-2624 or by calling the
              State Comptroller's Hotline, 1-800-848-3 792.

IV.      CONTRACT MANAGEMENT

         The department has assigned the following named individuals, address
         and phone number as indicated, as Contract Manager and Contract
         Administrator.

         A.   The Contract Manager:

              The  Contract Manager for this contract will be:

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                                                   CONTRACT #
                                                           --------------------

         Bob Torrescano, Hospital Administrator
         North Florida Reception Center
         Post Offrce Box 628
         Lake Butler, Florida 32054

         The Contract Manager will perform the following functions:

         a.   Serve as the liaison between the department and the
              contractor
         b.   Receive and distribute deliverables from the contractor
         c.   Monitor the progress of the contractor
         d.   Meet with the contractor at least twice annually to evaluate
              the contractor's performance
         e.   Review, verify, and approveinvoicesfrom the contractor
         f.   Evaluate contractor performance upon completion of the
              contract. This evaluation will be placed on file and will be
              used if the contract is subsequently used as a reference in
              fixture procurements.

         B.   The Contract Administrator:

                   The Contract Administrator for this contract will be:

              Jerry Pilcher, Director ofAdministrahon
              5700 S. W. 34th Street, Suite 335
              Gainesville, Florida 32608-53 73
              (352) 955-2035

              The Contract Administrator will perform the following functions:

              a.   Maintain the contract file
              b.   Process all contract amendments, renewals, and termination
                   ofthe contract.
              c.   Maintain the official records of all correspondence between
                   the department and the contractor

         C.   Contractor's Representative

              The name, address and telephone number of the representative of
              the contractor responsible for administration ofthe program under
              this contract is:

              American Mobile Surgical Services, Inc.
              Sandy Thompson,RN,LHRM
              P. O. Box 560699
              Orlando, Florida 32850699
              (407) 849-2288

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                                                   CONTRACT #
                                                           --------------------

         D.   Changes to Designees

              In the event that different representatives are designated by
              either party after execution of this contract, notice of the name
              and address of the new representatives will be rendered in writing
              to the other party and said notification attached to originals of
              this contract.

V.       CONTRACT MODIFICATIONS

         Modifications to provisions of this contract shall ony be valid when
         they have been rendered in writing and duly signed by both parties. The
         parties agree to renegotiate this contract if stated revisions of any
         applicable laws, regulations or increases/decreasesin allocations make
         changes to this contract necessary. There are no obligations to agree
         by either party.

VI.      TERMINATION/CANCELLATION

         A.   TERMINATION AT WILL

              This contract may be terminated by either party upon no less than
              thirty (3 0) calendar days notice, without cause, unless a lesser
              time is mutually agreed upon by both parties. Said notice shall be
              delivered by certified mail (return receipt requested) or in
              person with proof of delivery.

         B.   Termination Because of Lack of Funds

              In the event funds to finance this contract become unavailable,
              the department may terminate the contract upon no less than
              twenty-four (24) hours notice in writing to the contractor. Said
              notice shall be delivered by certified mail, return receipt
              requested, or in person with proof of delivery. The department
              shall be the final authority as to the availability offends for
              this contrast.

         C.   Termination for Breach

              If a breach of this contract occurs by the contractor, the
              department may by written notice to the contractor, terminate this
              contract upon twenty-four (24) hours notice. Said notice shall be
              delivered by certified mad (return receipt requested) or in person
              with proof of delivery. If applicable, the department may employ
              the default provisions

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                                                   CONTRACT #
                                                           --------------------

              in Chapter 60A 1, Florida Administrative Code. The provisions
              herein do not limit the department's right to remedies at law or
              to damages.

         D.   Termination for Unauthorized Employment

              Violation of the employment provision as determined pursuant to
              Section 274A(e), Immigration and Nationality Act, shall be grounds
              for unilateral cancellation of this contract.

V11.     CONDITIONS

         A.   Records

              1.   The contractor agrees to maintain books, records and
                   documents (including electronic storage media) in accordance
                   with generally accepted accounting procedures and practices
                   which sufficiently and properly reflect all revenues and
                   expenditures offends provided by the department under this
                   contract, to provide a financial and compliance audit to the
                   department and to ensure that all related party transactions
                   are disclosed to the auditor.

              2.   The contractor agrees to include these aforementioned audit
                   and record keeping requirements in all approved subcontracts
                   and assignments.

              3.   The contractor agrees to maintain and file with the
                   department such progress, fiscal and inventory reports as
                   specified in Section II, and other reports as the department
                   may require within the period of this contract.

              4.   The contractor agrees to retain all went records, financial
                   records, supporting documents, statistical records, and any
                   other documents (including electronic storage media)
                   pertinent to this contract for a period of seven(7) year
                   after termination of the contract, or if an audit has been
                   initiated and audit findings have not been resolved at the
                   end of seven (7) years, the records shall be retained unto
                   resolution of the audit findings. The contractor will
                   cooperate with the department to facilitate the duplication
                   and transfer of any sued records or documents during the
                   required retention period.

              5.   Monitoring persons duly authorized by the department and
                   auditors shall have the right to examiine any of sued records
                   and documents at all reasonable times during said retention
                   period or as long as records are retained, whichever is
                   later, including any records, papers, documents, facilities
                   relevant to this contract. Following such inspection the
                   department will deliver to the contractor a list of its
                   comments with regard to the manner in which said goods or
                   services are being provided. The

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                                                   CONTRACT #
                                                           --------------------

                   contractor will rectify all noted deficiencies provided by
                   the department within the specified period of time set forth
                   in the comments or provide the department with a reasonable
                   and acceptable justification for not correcting the noted
                   shortcomings.

                   The contractor's failure to correct or justify within a
                   reasonable time as specified by the department may result in
                   the withholding of payments, being deemed in breach or
                   default, or termination of this contract.

              6.   The contractor agrees to allow public access to all
                   documents, papers letters, or other materials subject to the
                   provisions of Chapter 119, F.S., and made or received by the
                   contractor in conjunction with this contract. It is expressly
                   understood that substantial evidence of the contractor's
                   refusal to comply with this provision shall constitute a
                   breach of contract.

         B.   Prison Rehabilitative Industries and Diversified Enterprises
              (PRIDE)

              The contractor agrees that any articles which are the subject of,
              or are required to carry out this contract shall be purchased from
              Prison Rehabilitative Industries and Diversified Enterprises, Inc.
              (PRIDE) identified under Chapter 946, F.S., in the same manner and
              under the procedures set forth in subsections 946.515(2) and (4).
              For purposes of this contract, the contraktor shall be deemed to
              be substituted for the department insofar as dealings with PRIDE.
              This clause is not applicable to subcontractors, unless otherwise
              required by law. Available product, pricing and delivery schedules
              may be obtained by contacting:

              Terrie Brooks, Bid Administrator
              PRIDE of Florida
              2720 Blair Stone Road, Suite G
              Tallahassee, Florida 32301
              Telephone: (904)487-3774

         C.   Procurement of Materials with Recycled Content

              It is expressly understood and agreed that any products or
              materials which are the subject of, or are required to carry out
              this contract shall be procured in accordance with the provisions
              of Section 403.7065 and Section 287.045, Florida Statutes.

         D.   Sponsorship

              If the contractor is a nongovernmental organization which sponsors
              a program financed wholly or in part by state funds, including any
              funds obtained through this contract, it shall, in publicizing,
              advertising or describing the sponsorship of the program, state:
              "Sponsored by (contractor's rurme) and the State of Florida,
              Department of Corrections." If the sponsorship reference is in
              written material, the

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                                                   CONTRACT #
                                                           --------------------

              words "State of Florida, Department of Corrections" shall appear
              in the same size letters or type as the name of the organization.

         E.   Employment of Department Personnel,

              The contractor shall not knowingly engage in this project, on a
              full time, part time, or other basis during the period of this
              contract, any current or former employee of the department where
              such employment conflicts with Section 112.3185, Florida Statutes.

         F.   Non-Discrimination During the performance of this contract the
              contractor will not discriminate against any employee or applicant
              for employment because of age, sex, race, creed, color or national
              origin. The contractor will take affirmative action to ensure that
              applicants, clients and employees are treated without
              discrimination regarding their age, sex, race, creed, color, or
              national origin. The contractor agrees to post in conspicuous
              places, available to employees and applicants for employment,
              notices setting forth the provisions of this non-discrimination
              clause. In addition, the contractor shall comply with the
              Americans with Disabilities Act. In the event of the contractor's
              noncompliance with the nondiscrimination clauses, the Americans
              with Disabilities Act, or with any other such rules, regulations,
              or orders, this contract may be canceled, terminated or suspended
              in whole or in part and the contractor may be declared ineligible
              for further contracts.

         G.   Indemnification

              The contractor shall be liable, and agrees to be liable for, and
              shall indemnify, defend and hold the department harmless from all
              claims, suits, judgments or damages including court costs and
              attorney's fees arising out ofintentionalacts, negligence or
              omissions by the contractor in the course of the operations of his
              contract up to the limits of liability set forth in Section
              768.28, Florida Statutes.

         H.   Contractor's Insurance

              The contractor warrants that he/she is, and shall remain for the
              term of this contract, in compliance with the financial
              responsibility requirements of Section 45 8.320, Florida Statutes,
              and is not entitled to, and shall not claim, any exemption from
              such requirements. The contractor also warrants that funds held
              under Section 45 8.320,

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                                                   CONTRACT #
                                                           --------------------

              Florida Statutes, are available to pay claims against the State in
              accordance with the preceding paragraph, subsection G,
              Indemnification

              The contractor agrees to provide adequate liability insurance
              coverage to the extent of liability under Section 768.28, Florida
              Statutes, on a comprehensive basis and to hold such liability
              insurance at all times during the existence of this contract. Upon
              the execution of this contract, the contractor shall furnish the
              department written verification supporting both the determination
              and existence of such insurance coverage. Such coverage may be
              provided by a self-insurance program established and operating
              under the laws of the State of Florida. The department reserves
              the right to require additional insurance where appropriate. If
              the contractor is a state agency or subdivision as defined in
              Section 768.28, Florida Statutes, the contractor shall furnish the
              department, upon request, written verification of liability
              protection in accordance with Section 768.28, Florida Statutes.
              Nothing herein shall be construed to extend any party's liability
              beyond that provided in Section 768.28, Florida Statutes.

         I.   Copyrights and Right to Data

              Where activities supported by the contract produce original
              writing, sound recordings, pictorial reproductions, drawings or
              other graphic representation and works of any similar nature, the
              department has the right to use, duplicate and disclose such
              materials in whole or in part, in any manner, for any purpose
              whatsoever and to have others acting on behalf of the department
              to do so. If the materials so developed are subject to copyright,
              trademark, or patent, legal title and every right, interest, claim
              or demand of any kind in and to any patent, trademark or
              copyright, or application for the same, will vest in the State of
              Florida, Department of State for the exclusive use and benefit of
              the state. Pursuant to Section 286.021, Florida Statutes, no
              person, firm or corporation, including parties to this contract,
              shall be entitled to use the copyright, patent, or trademark
              without the prior written consent of the Department of State.

              The department shall have unlimited rights to use, disclose or
              duplicate, for any purpose whatsoever, all information and data
              developed, derived, documented, or furnished by the contractor
              under this contract. All computer programs and other documentation
              produced as part of the contract shall become the exclusive
              property of the State of Florida, Department of State and may not
              be copied or removed by any employee of the contractor without
              express written permission of the department.

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                                                   CONTRACT #
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         J.   Disputes

              Any dispute concerning performance of the contract that cannot be
              resolved informally shall be reduced to writing and delivered to
              the department's Contract Manager. The Contract Manager shall
              decide the dispute, reduce the decision to writing, and deliver a
              copy to the contractor.

         K.   Agent of the Department

              In the contractor's performance of its duties and responsibilities
              under this contract, it is mutually understood and agreed that the
              contractor is at all times acting and performing as an agent of
              the Department of Corrections but not as an employee of the State
              of Florida, Department of Corrections. The department shall
              neither have nor exercise any control or direction over the
              methods by which the contractor shall perform its work and
              functions other than as provided herein.

              Nothing in this contract is intended to, nor shall be deemed to
              constitute, a partnership or a joint venture between the parties.

         L.   Subcontracts

              The contractor is fully responsible for all work performed under
              this contract. The contractor may, with the consent of the
              department, enter into written subcontracts) for performance of
              certain of its functions under the contract. Subcontracts shall be
              approved, in writing, by the department Contract Manager prior to
              the effective date of any subcontract. No subcontract which the
              contractor enters into with respect to performance under the
              contract shall in any way relieve the contractor of any
              responsibility for performance of its duties. All payments to
              subcontractors shall be made by the contractor. No payment to the
              contractor will be processed until all subcontracts are approved,
              in writing, by the department.

         M.   Assignment

              The contractor agrees to neither assign the responsibility of this
              contract to another party nor subcontract for any of the work
              contemplated under this contract without prior written approval
              ofthe department.

         N.   Payment of Subcontractors

              If a subcontractor is approved by the department, payments made by
              the contractor to the subcontractor must be within seven (7)
              working days after

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                                                   CONTRACT #
                                                           --------------------

              receipt of full or partial payments from the department in
              accordance with Section 287.05 85, Florida Statutes. Failure to
              pay within seven (7) working days will result in a penalty charged
              against the contractor and paid to the subcontractor in the amount
              of one-half of one (1) percent of the amount due, per day from the
              expiration of the period allowed herein for payment. Such penalty
              shall be in addition to actual payments owed and shall not exceed
              fifteen (15) percent of the outstanding balance due.

         O.   Force Majeure

              Neither party shall be liable for loss or damage suffered as a
              result of any delay or failure in performance under this agreement
              or interruption of performance resulting directly or indirectly
              from acts of God, civil or military authority, acts of public
              enemy, war, riots, civil disturbances, insurrections, accidents,
              fire, explosions, earthquakes, floods, water, wind, lightning,
              strikes, labor disputes, shortages of suitable parts, materials,
              labor or transportation to the extent such events are beyond the
              reasonable control of the party claiming excuse from liability
              resulting therefrom.

         P.   Severability

              The invalidity or unenforceability of any particular provision of
              this contract shall not affect the other provisions hereof and
              this contract shall be construed in all respects as if such
              invalid or unenforceable provision was omitted.

         Q.   Use of Funds for Lobbying, Prohibited

              The contractor agrees to comply with the provisions of Section
              216.347, Florida Statutes, which prohibits the expenditure of
              state funds for the purpose of lobbying the legislature or a state
              agency.

         R.   Patents and Royalties

              The contractor, without exception, shall indemnify and save
              harmless the department and its employees from liability of any
              nature or kind, including cost and expenses for or on account of
              any copyrighted, patented, or unpatented invention, process, or
              article manufactured or supplied by the contractor. The contractor
              has no liability when such claim is solely and exclusively due to
              the combination, operation or use of any article supplied
              hereunder with equipment or data not supplied by the contractor or
              is based solely and exclusively upon the department's alteration
              of the article. The department will provide prompt written

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                                                   CONTRACT #
                                                           --------------------

              notification of a claim of copyright or patent infringement and
              will afford the contractor full opportunity to defend the action
              and control the defense. Further, if such a claim is made or is
              pending, the contractor may, at its options and expenses procure
              for the department the right to continue use of, replace or modify
              the article to render it noninfringing (if none of the
              alternatives are reasonably available, the department agrees to
              return the article on request to the contractor and receive
              reimbursement, if any, as may be determined by a court of
              competent jurisdiction). If the contractor uses any design,
              device, or materials covered by letter, patent or copyright, it is
              mutually agreed and understood without exception that the contract
              prices shall include all royalties or cost arising from the use of
              such design, device or materials in any way involved in the work..

         S.   Verbal Instructions

              No negotiations, decisions, or actions shall be initiated or
              executed by the contractor as a result of any discussions with any
              department employee. Only those communications which are in
              writing from the department's administrative or project staff
              identified in section VII, Contract Management, of this contract
              shall be considered as a duly authorized expression on behalf of
              the department. Only communications from the contractor which are
              signed and in writing will be recognized by the department as duly
              authorized expressions on behalf of the contractor.

         T.   No Prior Involvement/Conflict of Interest

              No officer or employee of the department shall receive any
              compensation whatsoever, directly or indirectly, for any act or
              service which he/she may do or perform for or on behalf of any
              officer or employee or agency, or employee of a contractor; nor
              shall any officer or employee of the department or the state be
              interested, directly or indirectly, in any contract or purchase
              made, or authorized to be made, by anyone for or on behalf of the
              department.

         U.   State Licensing Requirements

              All corporations and not for profit corporations seeking to do
              business with the State of Florida shall be on file with the
              Florida Department of State in accordance with the provisions of
              Chapter 607 or 617, Florida Statutes, similarly, partnerships
              seeking to do business with the State of Florida shall have
              complied with the applicable provisions of Chapter 620, Florida
              Statutes, and set forth the particular reasons) therefore. A
              statement shall be required indicating that the contractor is a
              corporation or other legal entity. If subcontractors are used, a
              statement shall also be required indicating that all
              subcontractors are registered with the State of

                                       14

<PAGE>

                                                   CONTRACT #
                                                           --------------------

         Florida in accordance with Chapter 607, 617 or 620, Florida
         Statutes, providing their corporate charter numbers.

V.       Public Entity Crimes Information Statement

         A person or affiliate who has been placed on the convicted vendor list
         following a conviction for a public entity crime may not submit a bid
         on a contract to provide any goods or services to a public entity, may
         not submit a bid on a contract with a public entity for the
         construction or repair of a public building or public work, may not
         submit bids on leases of real property to a public entity, may not be
         awarded or perform work as a contractor, supplier, subcontractor, or
         consultant under a contract with any public entity, and may not
         transact business with any public entity in excess of the threshold
         amount provided in Section 287.017, for CATEGORY TWO for a period of 36
         months from the date of being placed on the convicted vendor list.

Waiver of breach of any provision of this contract shall not be deemed to be a
waiver of any other breach and shall not be construed to be a modification of
the terms of this contract.

This contract will be governed by and construed in accordance with the laws of
the State of Florida.

This Contract contains all the terms and conditions agreed upon by the parties.

IN WITNESS THEREOF, the parties hereto have caused this contract to be executed
by their undersigned officials as duly authorized.

CONTRACTOR:                            STATE OF FLORIDA
                                       DEPARTMENT OF CORRECTIONS

             SIGNED                                 SIGNED
BY: /s/ Daniel R. Williams             BY: /s/ J.S. Petrovsky

NAME: Daniel R. Williams               NAME:  J. S.Petrovsky

TITLE: Chief Financial Officer         TITLE: Regional Director, Region II
                                              Department of Corrections

DATE: Sept. 8, 1997                    DATE: 11/12/97

Contractor's FElD # ###-##-####
                  --------------

                                       15

<PAGE>

                                                               Contract No.09214

AMENDMENT#1

                         CONTRACT AMENDMENT BETWEEN THE

                            DEPARTMENT OF CORRECTIONS

                                       AND

                     AMERICAN MOBILE SURGICAL SERVICES, INC.

This is an Amendment of the contract by and between the Department of
Corrections and American Mobile Surgical Services, Inc. being the same parties
who entered into the contract dated November 12. 1997 to provide Mobile Surgery
services for the department's inmates.

The contract shall be amended as follows: The name of the corporation is changed
to U.S. Medical Group d/b/a American Mobile Surgery Services. The medical staff
Performing surgery within the unit are contract employees of the Department of
Corrections. Credentialling of providers is completed by the Department of
Corrections. The Department of Corrections maintains responsibility for
infection control, risk management, and quality assurance. The Department of
Corrections will be responsible for the disposal of bio-medical waste generated
within the Mobile Surgery Unit.

All other terms and conditions of the original contract and subsequent
modifications and renewals remain in full force and effect.

In witness whereof, the parties hereto have caused this amendment to be executed
by their undersigned officials as duly authorized.

CONTRACTOR:                            STATE OF FLORIDA
U.S. Medical Group d/b/a               DEPARTMENT OF CORRECTIONS
American Mobile Surgery Services

SIGNED                                 SIGNED

BY: /s/ Thomas Winters                 BY: /s/ C. George Denman

TYPED/PRINTED                          TYPED/PRINTED
NAME: Thomas Winters                   NAME: C. George Denman

TITLE: President CEO                   TITLE: Regional Director- Region II

DATE: 7/23/99                          DATE:

CONTRACTORFEID#

Contractor Phone (407) 849-2288
                 --------------
Contractor Fax  (407) 849-6412
                 --------------

<PAGE>

                                                                   09214
                                                                   Amendment # 1

                         CONTRACT AMENDMENT BETWEEN THE

                            DEPARTMENT OF CORRECTIONS

                                       AND

                     AMERICAN MOBILE SURGICAL SERVICES, INC.

This is an amendment to the contract between the Florida Department of
Corrections and American Mobile Surgical Services, Inc.to provide Mobile Surgery
services for the department's inmates.

         This amendment:
         -    changes the name of the contractor pursuant to Section V.,
              Contract Modifications;
         -    revises Section H., C. Department Responsibilities to include
              credentialling of providers and responsibility for infection
              control, risk management, quality assurance, and the disposal of
              bio-medical waste;
         -    changes the name of the contractor pursuant to Section III., C.
              Official Payee;
         -    revises the area code of the Vendor Ombudsman referenced in
              Section III., K. Vendor Ombudsman;
         -    revises the Contract Administrator referenced in Section IV., B.
              The Contract Administrator;
         -    revises the area code of the Bid Administrator referenced in
              Section VII, B. Prison Rehabilitative Industries and Diversified
              Enterprises (PRIDE);
         -    revises the Sponsorship referenced in Section VII, D. Sponsorship;

In accordance with Section V, Contract Modifications the following changes are
hereby made:

1.       The name of the contractor is changed from American Mobile Surgery
         Services to U.S. Medical Group d/b/a American Mobile Surgery Services.

2.       Section H., C. Department Responsibilities is revised to read:

II.      C.   Department Responsibilities

              1.   The department will provide, ants own expense and discretion,
                   a sufficient number of Correctional Officers to supervise
                   those inmates receiving services from the contractor.

              2.   Clinical issues involving medical care rendered by the
                   contractor shall be resolved jointly by the contractor and
                   the Regional Health Services Director, Region II.

              3.   The department will provide the contractor with access to all
                   department rules and regulations. In addition, any written
                   changes impactingthe contractor and how services are
                   delivered will be made available to the contractor.

              4.   The medical staff performing surgery within the unit are
                   considered contract employees of the Department of
                   Corrections. Credentialling of providers shall be completed
                   by the Department of Corrections.

Page 1 of 3

<PAGE>

                                                                   09214
                                                                   Amendment # 1

              5.   The Department of Corrections maintains responsibility for
                   infection control, risk management, and quality assurance.
                   The Department of Corrections will be responsible for the
                   disposal of bio-medical waste generated within the Mobile
                   Surgery Unit.

         3.   Section III., C. OFFICIAL PAYEE, second paragraph is revised to
              read:

III.     C.   Official Payee

              U.S. Medical Group
              Sandy Thompson, RN, LHRM
              P. 0. box 560699
              Orlando, FL 32856-0699

         4.   Section III, K. VENDOR OMBUDSMAN, last sentence is revised to
              read:

III.     K.   Vendor Ombudsman

         The Vendor Ombudsman may be contacted at (850)488-2624 or by calling
         the State Comptroller's Hotline, 1-800-848-3 792.

5.       Section IV, B. THE CONTRACT ADMINISTRATOR, first paragraph is
         revised to read:

IV.      B.   The Contract Administrator

         The Contract Administrator for this contract will be:
         Gus Hubert, Administrative Services Director
         Department of Corrections
         Gainesville Service Center
         4127 TW 270 Lane
         Gainesville, FL 32606
         (352)955-6506

6.       Section VII, B. PRISON REHABILITATIVE INDUSTRIES AND DIVERSIFIED
         ENTERPRISES PRIDE), the last sentence is revised to read:

VII.     B.   PRISON REHABILITATIVE INDUSTRIES AND DIVERSIFIED ENTERPRISES
              (PRIDE)

         Available products, pricing and delivery schedules may be obtained by
         contacting:
         Terrie Brooks, Bid Administrator
         PRIDE of Florida
         2720 Blair Stone Road, Suite G
         Tallahassee, Florida 32301
         Telephone: (850)487-3774

Page 2 of 3

<PAGE>

                                                                   09214
                                                                   Amendment # 1

7.       Section VII, D. SPONSORSHIP, the first sentence is revised to read:

VII      D.   Sponsorship

         If the contractor is a nongovernmental organization which sponsors a
         program financed wholly or in part by state funds, including any funds
         obtained through this contract, it shall, in publicizing, advertising
         or describing the sponsorship of the program, state: "Sponsored by U.S.
         Medical Group d/b/a American Mobile Surgical Services, Inc. and the
         State of Florida, Department of Corrections."

This amendment shall begin on the date on which it is signed by both parties.

All other terms and conditions of the original contract and previous amendments
remain in full force and effect. In witness thereof, the parties hereto have
caused this amendment to be executed by their undersigned officials as duly
authorized.

CONTRACTOR:                            STATE OF FLORIDA
U.S. MEDICAL GROUP D/B/A               DEPARTMENT OF CORRECTIONS
American Mobile Surgery Services

SIGNED                                 SIGNED
BY: /s/ Sandra L. Thompson             BY: /s/ Michael W. Moore

NAME: Sandra L. Thompson               NAME: Michael W. Moore

TITLE: CEO                             TITLE: Secretary
                                              Department of Corrections

DATE: 12/29/99                         DATE:  1/7/00

FEID #  61-009274                      APPROVED AS TO FORM AND
                                       LEGALITY SUBJECT TO
                                       EXECUTION BY THE PARTIES
                                       ------------------------

                                       Louis A. Vargas
                                       General Counsel
                                       Department of Corrections

Page 3 of 3

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