[1] Univ Calif San Francisco, Dept Family & Community Med, San Francisco, CA 94143 USA
[2] Univ Calif San Francisco, Dept Social & Behav Sci, Sch Nursing, San Francisco, CA 94143 USA
[3] Univ Calif San Francisco, Dept Psychiat, San Francisco, CA 94143 USA
[4] Univ Calif San Francisco, Dept Med, San Francisco, CA 94143 USA
[5] Kaiser Permanente, Inst Hlth Res, Denver, CO USA