| · | To sign and file with the United States Securities and Exchange Commission the Annual Report of the Company on Form 10-K for the fiscal year ended December 31, 2010, and any amendments or supplements to such Annual Report; and |
|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| · | To execute and deliver any instruments, certificates or other documents which they shall deem necessary or proper in connection with the filing of such Annual Report, and generally to act for and in the name of the undersigned with respect to such filing as fully as could the undersigned if then personally present and acting. |
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| Signature                                      |   | Title                                                                                        |
|------------------------------------------------|--------|----------------------------------------------------------------------------------------------|
|                                           |   |                                                                                         |
| /s/ David C. Bupp               |   | President, Chief Executive Officer and Director                     |
| David C. Bupp                        |   | (principal executive officer)                                                      |
|                                           |   |                                                                                         |
| /s/ Brent L. Larson             |   | Senior Vice President and Chief Financial Officer              |
| Brent L. Larson                      |   | (principal financial officer and principal accounting officer) |
|                                           |   |                                                                                         |
| /s/ Carl J. Aschinger, Jr. |   | Chairman of the Board of Directors                                  |
| Carl J. Aschinger, Jr.          |   |                                                                                         |
|                                           |   |                                                                                         |
| /s/ Gordon A. Troup             |   | Vice Chairman of the Board of Directors                        |
| Gordon A. Troup                      |   |                                                                                         |
|                                           |   |                                                                                         |
| /s/ Brendan A. Ford             |   | Director                                                                                     |
| Brendan A. Ford                      |   |                                                                                         |
|                                           |   |                                                                                         |
| /s/ Owen E. Johnson             |   | Director                                                                                     |
| Owen E. Johnson, M.D.           |   |                                                                                         |
|                                           |   |                                                                                         |
| /s/ Fred B. Miller              |   | Director                                                                                     |
| Fred B. Miller                       |   |                                                                                         |
|                                           |   |                                                                                         |
| /s/ Eric K. Rowinsky            |   | Director                                                                                     |
| Eric K. Rowinsky, M.D.          |   |                                                                                         |

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