1. Department of Urology, Division of Andrology, General and Community Health, Michigan Medicine University of Michigan Ann Arbor Michigan USA
2. Department of Urology, Division of Neurology and Pelvic Reconstructive Surgery, Michigan Medicine University of Michigan Ann Arbor Michigan USA
3. Department of Surgery, Division of Urologic Surgery Washington University School of Medicine St. Louis Missouri USA
4. Department of Surgery, Division of Public Health Sciences and the Alvin J. Siteman Cancer Center Washington University School of Medicine St. Louis Missouri USA
5. Department of Urology, College of Medicine University of Iowa Iowa City Iowa USA
6. David Geffen School of Medicine University of California Los Angeles Los Angeles California USA
7. Departments of Urology and Obstetrics and Gynecology University of Southern California Los Angeles California USA
8. Rand Corporation Santa Monica California USA