[1] Univ Calif San Francisco, Dept Urol, 1450 3rd St, San Francisco, CA 94158 USA
[2] Univ Calif San Francisco, Epidemiol & Biostat, San Francisco, CA 94158 USA
[3] Univ Calif San Francisco, Inst Human Genet, San Francisco, CA 94158 USA
[4] Univ Hawaii, Canc Res Ctr Hawaii, Epidemiol Program, Honolulu, HI 96813 USA
[5] Univ Southern Calif, Dept Prevent Med, Los Angeles, CA 90033 USA