1. Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, UT, USA
2. The James Buchanan Brady Urological Institute and Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
3. Department of Urology, Stanford University School of Medicine, Palo Alto, CA, USA
4. Center for Reproductive Medicine, Baylor College of Medicine, Houston, TX, USA
5. Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
6. Texas Department of State Health Services, Birth Defects Epidemiology and Surveillance Branch, Austin, TX, USA
7. Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
8. Department of Urology, Weill Cornell Medical College, New York, NY, USA