[1] Univ Calif San Francisco, Lung Biol Ctr, San Francisco, CA 94143 USA
[2] Univ Calif San Francisco, Div Gen Internal Med, San Francisco, CA 94143 USA
[3] Univ Calif San Francisco, Dept Med, San Francisco, CA 94143 USA
[4] Univ Calif San Francisco, Med Effectiveness Res Ctr Diverse Populat, San Francisco, CA 94143 USA
[5] San Francisco Gen Hosp, San Francisco, CA 94110 USA
[6] Stanford Univ, Sch Med, Dept Hlth Res & Policy, Div Epidemiol, Stanford, CA 94305 USA
[7] Stanford Univ, Sch Med, Dept Genet, Stanford, CA 94305 USA
[8] Stanford Univ, Dept Stat, Stanford, CA 94305 USA
[9] Stanford Univ, Dept Anthropol Sci, Stanford, CA 94305 USA
[10] No Calif Canc Ctr, Union City, CA USA
[11] Kaiser Permanente, Div Res, Dept Epidemiol & Hlth Serv Res, Oakland, CA USA