1. From the Section of Urologic Oncology, Urological Institute, Cleveland Clinic Foundation, Cleveland, Ohio, Division of Urology, University of Texas Health Sciences Center and Southwest Oncology Group, San Antonio and Department of Clinical Cancer Prevention, M. D. Anderson Cancer Center, Houston, Texas, Southwest Oncology Group Statistical Center, Fred Hutchinson Cancer Research Center, Seattle, Washington, and Cancer Prevention Studies Branch, Division of Clinical Sciences, National Cancer...