[1] Univ Calif Davis, Dept Psychiat & Behav Sci, Davis, CA 95616 USA
[2] Univ Pittsburgh, Dept Epidemiol, Pittsburgh, PA 15261 USA
[3] Univ Pittsburgh, Dept Psychiat, Pittsburgh, PA USA
[4] Univ Calif Davis, Dept Internal Med, Div Pulm Crit Care & Sleep Med, Davis, CA USA
[5] Rush Univ, Med Ctr, Dept Psychiat, Chicago, IL 60612 USA
[6] Rush Univ, Med Ctr, Dept Prevent Med, Chicago, IL 60612 USA
[7] Univ Calif Davis, Dept Publ Hlth Sci, Div Epidemiol, Davis, CA 95616 USA
[8] Univ Calif Irvine, Dept Stat, Irvine, CA USA