1. Division of Public Health Sciences; Department of Surgery; Washington University School of Medicine; St. Louis Missouri
2. Alvin J. Siteman Cancer Center; Department of Surgery; Washington University School of Medicine; St. Louis Missouri
3. Center for Comprehensive Access & Delivery Research and Evaluation (CADRE); Iowa City VA Health Care System; Iowa City Iowa
4. Departments of Obstetrics and Gynecology; and Urology; College of Medicine; University of Iowa; Iowa City Iowa
5. Department of Epidemiology; College of Public Health; University of Iowa; Iowa City Iowa
6. Division of Urologic Surgery; Department of Surgery; Washington University School of Medicine; St. Louis Missouri