1. From the Department of Psychiatry, Columbia University Medical Center, and New York State Psychiatric Institute, New York; the Department of Epidemiology, Columbia University Mailman School of Public Health, New York; the Department of Health Security, National Institute for Health and Welfare, Kuopio, Finland; the Department of Child Psychiatry, University of Turku, Turku, Finland; the Department of Biostatistics, Columbia University Mailman School of Public Health, New York; the University of Oulu,...