[1] Columbia Univ Coll Phys & Surg, New York State Psychiat Inst, Dept Psychiat, Div Epidemiol, New York, NY 10032 USA
[2] Univ Calif San Francisco, Dept Psychiat, San Francisco, CA 94143 USA
[3] Univ Calif San Diego, Ctr Behav Genom, San Diego, CA 92103 USA
[4] Kaiser Permanente, Div Res, Oakland, CA USA