Please select the eligibility criteria that correspond to the clinical trial below.
Title: Study of Vitamin D Supplementation to Male HIV Sero-positive Patients
Brief Summary: The investigators want to investigate if HIV sero-positive males benefit from vitamin D supplementation. The study runs in 16 weeks and the participants are treated with one of three placebo controlled regimes (tablets):

1. Calcium
2. Calcium and 25-hydroxy-vitamin D
3. Calcium and 25-hydroxy-vitamin D and 1,25-dihydroxyvitamin D

The endpoints are:

* Serum vitamin D
* Parathyroid hormone
* ionized calcium
* T-lymphocyte fractions (naïve, mature, Tregs)
* Osteocalcin (bone metabolism)


Options:
A: Inclusion Criteria:

* Age 18 years and 0 days through 24 years and 364 days
* HIV-1 infection as documented by any licensed ELISA test kit and confirmed by Western blot, HIV-1 culture, HIV-1 antigen, plasma HIV-1 RNA, or a second antibody test by a method other than ELISA at any time prior to study entry
* Currently being treated with a stable FDA-approved ARV combination therapy, containing \> 3 antiretrovirals, for \> 28 days, according to HRSA guidelines. Treatment regimen will not be started or changed for the purposes of participation in this study. Subjects will be receiving therapy at the direction of their treating physician
* Willingness to remain on the same ARV combination therapy for the 12-week duration of the study
* Ability and willingness to participate in the study by providing written informed consent
* Willingness to be randomized to receive either vitamin D or placebo

Exclusion Criteria:

* Prior hypersensitivity to vitamin D
* History of arteriosclerosis, renal stones, glomerulonephritis, nephrotic syndrome, or hypercalcemia
* Lactation or current pregnancy
* Active therapy for malignancy
* Known presence of gastrointestinal disease that would interfere with drug administration or absorption
* Serological evidence of Hepatitis B surface antigen (HBsAg)
* Confirmed creatinine clearance \< 90 ml/min (calculated GFR from serum creatinine using the MDRD formula)
* Grade 3 or higher clinical toxicity
B: Inclusion Criteria:

* HIV-1 infection
* No evidence of any exclusionary resistance mutations based on results from any genotype assay from any laboratory that has a CLIA (Clinical Laboratory Improvement Amendments) certification or its equivalent. Results must be available from testing any time in the past or must be obtained prior to entry and reviewed by the site investigator.
* ARV drug-naïve (\<=10 days of ART at any time prior to entry) and no ARV drugs taken within the past 30 days.
* CD4+ cell count of any value obtained within 90 days prior to study entry at any laboratory that has a CLIA certification or its equivalent.
* HIV-1 RNA \>1000 copies/mL obtained within 90 days prior to study entry at any laboratory that has a CLIA certification or its equivalent.
* Certain laboratory values obtained within 30 days prior to entry (as indicated in section 4.1.6 of the protocol.
* Serum calcium \< 10.5 mg/dL within 30 days prior to entry.
* For women of reproductive potential, negative serum or urine pregnancy test within 48 hours prior to initiating study medications.
* Subjects must refrain from participating in a conception process (i.e., active attempt to become pregnant or to impregnate, sperm donation, in vitro fertilization) and if participating in sexual activity that could lead to pregnancy, the subject/partner must use at least two of the reliable forms of contraceptive listed in section 4.1.9 of the protocol.
* 25-OH vitamin D \>=10 ng/mL and \<75 ng/mL.
* Ability and willingness of subject or legally authorized representative to provide informed consent.

Exclusion Criteria:

* Current or prior use of bisphosphonate therapy.
* Use of vitamin D supplements greater than 800 IU/day within 30 days prior to entry.
* Use of calcium supplements greater than 500 mg/day within 30 days prior to entry.
* Known allergy/sensitivity or any hypersensitivity to components of study drugs or their formulations.
* Any oral, intravenous, or inhaled steroids within the 30 days prior to enrollment(intranasal steroid use is allowed).
* Use of androgenic hormones or growth hormones.
* Receipt of systemic cytotoxic chemotherapy within 30 days prior to entry.
* Pregnancy or currently breastfeeding.
* Documentation of acute opportunistic infections within 30 days prior to entry.
* Serious illness requiring systemic treatment and/or hospitalization until subject either completes therapy or is clinically stable on therapy, in the opinion of the site investigator, for at least 7 days prior to entry.
* Weight \>300 lbs (exceeds weight limit of DXA scanners).
* History of nephrolithiasis (kidney stones).
* History of osteoporosis (as documented by DXA scan) or fragility fracture.
* Clinically active thyroid disease (use of thyroid hormone replacement therapy permitted but TSH must be in normal range).
* Current imprisonment or involuntary incarceration in a medical facility for psychiatric illness.
* Active drug or alcohol use or dependence that, in the opinion of the site investigator, would interfere with adherence to study requirements.
* Any condition that, in the opinion of the site investigator, would compromise the subject's ability to participate in the study.
C: Inclusion Criteria:

* HIV-positive
* Men or Women
* 18 Years of Age or older
* Initiating HAART at time of randomization

Exclusion Criteria:

* Pregnant or Lactating Women
* Individuals at pre-HAART disease stages
* BMI less than 16
D: Inclusion Criteria:

* male
* HIV-positive
* at least 18 years old
* receiving HiglyActiveAntiRetroviral Therapy (HAART)

Exclusion Criteria:

* hypercalcemia
* tuberculosis
* osteoporosis or other bone disease
* cancer with bone metastasis

Answer: D