1. Department of Emergency Medicine, University of California Davis School of Medicine, Sacramento
2. Department of Psychiatry, Columbia University Medical Center, New York, New York3New York State Psychiatric Institute, New York4Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, New York
3. Department of Psychiatry, Columbia University Medical Center, New York, New York5Research Foundation of Mental Hygiene, New York, New York
4. Department of Psychiatry, Columbia University Medical Center, New York, New York6Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
5. Department of Psychiatry, Columbia University Medical Center, New York, New York3New York State Psychiatric Institute, New York6Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
6. Department of Psychology, University of Michigan, Ann Arbor8Institute for Social Research, University of Michigan, Ann Arbor
7. Institute for Social Research, University of Michigan, Ann Arbor
8. RAND Corporation, Santa Monica, California
9. Boston School of Public Health, Boston University, Boston, Massachusetts