1. Department of Urology, University of North Carolina, Chapel Hill, North Carolina
2. Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
3. Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina
4. Department of Health Policy and Management, University of North Carolina, Chapel Hill, North Carolina
5. Department of Urology, Robert Wood Johnson Clinical Scholars Program, University of California-Los Angeles, Los Angeles, California
6. University of North Carolina, Chapel Hill, North Carolina