[1] NCI, Div Can Epidemiol & Genet, Rockville, MD 20852 USA
[2] Natl Yang Ming Univ, Shu Ten Urol Res Ctr, Taipei 112, Taiwan
[3] Kuakini Med Ctr, Japan Hawaii Canc Ctr, Honolulu, HI 96817 USA
[4] Johns Hopkins Univ, Sch Med, Dept Urol, Baltimore, MD USA
[5] Johns Hopkins Univ, Bloomberg Sch Publ Hlth, Dept Epidemiol, Baltimore, MD USA