1. The Duke Cancer Institute Center for Prostate and Urologic Cancers, Durham, NC, USA.
2. Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, NC, USA.
3. Department of Medicine, Duke University Medical Center, Durham, NC, USA.
4. Department of Family Medicine and Community Health, Duke University Medical Center, Durham, NC, USA.
5. Department of Radiology, Duke University Medical Center, Durham, NC, USA.