207
Participants
Start Date
December 31, 2007
Primary Completion Date
January 31, 2010
Study Completion Date
January 31, 2010
Vitamin D supplement
Vitamin D3 (cholecalciferol), 50,000 IU as a single capsule, will be administered orally to subjects in Groups A and C once every four weeks during study visits.
Placebo
A placebo will be administered orally to subjects in Groups B and D once every four weeks during study visits.
Mount Sinai Hospital, New York
Montefiore Medical Center, The Bronx
Children's Hospital of Philadelphia, Philadelphia
Children's National Medical Center, Washington D.C.
University of Maryland Medical School, Baltimore
University of Miami, Miami
Children's Diagnostic and Treatment Center, Fort Lauderdale
University of South Florida, Tampa
St. Jude Childrens Research Hospital, Memphis
Stroger Hospital of Cook County, Chicago
Childrens Memorial Hospital, Chicago
Tulane University, New Orleans
Children's Hopsital of Los Angeles, Los Angeles
University of California at San Francisco, San Francisco
University of Puerto Rico, San Juan
National Institute on Drug Abuse (NIDA)
NIH
National Institute of Mental Health (NIMH)
NIH
University of North Carolina, Chapel Hill
OTHER