1. HIV Center for Clinical and Behavioral Studies, New York State Psychiatric Institute and Columbia University, New York, New York.
2. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts.
3. Department of Child and Adolescent Psychiatry, Northwestern University Feinberg School of Medicine, Chicago, Illinois.
4. Department of Pediatrics, University of California, San Francisco, California.
5. Children's Diagnostic & Treatment Center, Fort Lauderdale, Florida.
6. Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois
7. Department of Pediatrics, University of Florida-Jacksonville, Jacksonville, Florida.
8. National Institute of Mental Health, Bethesda, Maryland.
9. Department of Pediatrics, Tulane University Health Sciences Center, New Orleans, Louisiana.