1. Departments of Urology and Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
2. Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington
3. Department of Urology, University of Connecticut, Farmington, Connecticut
4. Department of Medicine, New Mexico Veterans Affairs Health Care System and University of New Mexico, Albuquerque, New Mexico
5. Division of Urology, University of Utah School of Medicine, Salt Lake City, Utah
6. Applied Research Program, Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, Maryland