1. Laboratory of Clinical Psychopharmacology, Division of Special Mental Health Research, National Institute of Mental Health, Saint Elizabeths Hospital, Washington, D.C. 20032
2. Department of Pediatrics, University of Virginia Medical Center, Charlottesville 22908
3. Laboratory of Clinical Psychophysiology, National Institute of Mental Health, Bethesda, Maryland 20205
4. Laboratory of Neuropharmacology, National Institute of Mental Health