Myrna M Weissman1,2. 1. Division of Epidemiology, New York State Psychiatric Institute, 1051 Riverside Dr Unit 24, New York, NY 10032. weissman@nyspi.columbia.edu. 2. Department of Psychiatry, Columbia University College of Physicians & Surgeons; Division of Epidemiology, New York State Psychiatric Institute; and Mailman School of Public Health, Columbia University, New York, New York, USA.