[1] Michael E DeBakey VA Med Ctr, Ctr Qual Care & Utilizat Studies, Houston, TX 77030 USA
[2] Queens Univ, Dept Urol & Oncol, Kingston Gen Hosp, Kingston, ON, Canada
[3] TAP Pharmaceut Prod Inc, Lake Forest, IL USA
[4] Univ Calif San Francisco, Dept Urol, Program Urol Oncol, Ctr Comprehens Canc, San Francisco, CA 94143 USA
[5] Univ Calif San Francisco, Dept Urol, Program Genitourinary Canc Epidemiol, Ctr Comprehens Canc, San Francisco, CA 94143 USA
[6] Univ Calif San Francisco, Dept Urol, Program Populat Sci, Ctr Comprehens Canc, San Francisco, CA 94143 USA
[7] Baylor Coll Med, Scott Dept Urol, Houston, TX 77030 USA
[8] Baylor Coll Med, Dan L Duncan Canc Ctr, Houston, TX 77030 USA