1. Pediatric Psychopharmacology Unit, Child Psychiatry Service, Massachusetts General Hospital, Boston, Massachusetts and Harvard Medical School, Boston, Massachusetts
2. Pediatric Psychopharmacology Unit, Child Psychiatry Service, Massachusetts General Hospital, Boston, Massachusetts and Harvard Medical School, Boston, Massachusetts
3. Pediatric Psychopharmacology Unit, Child Psychiatry Service, Massachusetts General Hospital, Boston, Massachusetts and Harvard Medical School, Boston, Massachusetts
4. Pediatric Psychopharmacology Unit, Child Psychiatry Service, Massachusetts General Hospital, Boston, Massachusetts
5. Pediatric Psychopharmacology Unit, Child Psychiatry Service, Massachusetts General Hospital, Boston, Massachusetts, Harvard Medical School, Boston, Massachusetts and Harvard Institute of Psychiatry, Epidemiology and Genetics; Department of Psychiatry, Harvard Medical School at Brockton-West Roxbury Veteran's Affairs Medical Center; and Massachusetts Mental Health Center, Boston, Massachusetts.