1. Cancer Prevention and Control Program, Lombardi Comprehensive Cancer Center Georgetown University Washington District of Columbia USA
2. Department of Biostatistics, Bioinformatics, and Biomathematics, Lombardi Comprehensive Cancer Center Georgetown University Washington District of Columbia USA
3. Division of General Internal Medicine University of Iowa Carver College of Medicine/Iowa City VA Medical Center Iowa City Iowa USA
4. Department of Urology Kaiser Permanente East Bay Oakland California USA
5. Division of Research Kaiser Permanente Northern California Oakland California USA
6. Department of Urology UCSF San Francisco California USA