Affiliation: | 1. GH Sergievsky Center, Columbia University, New York, New York, U.S.A.;2. Department of Epidemiology, Columbia University, New York, New York, U.S.A.;3. Department of Sociomedical Sciences, Columbia University, New York, New York, U.S.A.;4. Department of Neurology, Columbia University, New York, New York, U.S.A.;5. Department of Sociology, Brandeis University, Waltham, Massachusetts, U.S.A.;6. Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, New York, U.S.A.;7. Department of Pediatrics, Columbia University, New York, New York, U.S.A.;8. Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, New York, U.S.A.;9. Division of Epidemiology, New York State Psychiatric Institute, New York, New York, U.S.A. |