1. From the Children's National Health System (T.M.L.), Pediatric Specialists of Virginia, and George Washington University of Medicine; Intramural Research Program (T.M.L., D.D., L.C., K.R.M.), Section on Developmental Genetic Epidemiology, National Institute of Mental Health, Bethesda, MD; Department of Biostatistics and Informatics (A.L.), University of Colorado School of Public Health, Denver; Child Mind Institute (M.X.), New York; Department of Biostatistics (V.Z.); and Department of Epidemiology ...