[1] Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA 94143 USA
[2] Univ Southern Calif, Keck Sch Med, Dept Prevent Med, Ctr Genet Epidemiol, Los Angeles, CA USA
[3] Duke Univ, Dept Neurosurg, Durham, NC USA
[4] Univ Nevada, Sch Community Hlth Sci, Dept Epidemiol, Reno, NV 89557 USA
[5] Univ Calif San Francisco, Dept Neurol Surg, San Francisco, CA USA
[6] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA
[7] Childrens Hosp Los Angeles, Los Angeles, CA 90027 USA
[8] Yale Univ, Sch Publ Hlth, Dept Chron Dis Epidemiol, New Haven, CT USA
[9] Univ Hawaii, Ctr Canc, Honolulu, HI 96822 USA
[10] USC Norris Comprehens Canc Ctr, 1450 Biggy St,NRT 1509H, Los Angeles, CA 90033 USA