1. From the Division of Urologic Surgery, Washington University School of Medicine, St. Louis, Missouri
2. Scott Department of Urology, Baylor College of Medicine, Houston, Texas
3. Division of Urologic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
4. Divisions of Urology and Hematology-Oncology, University of Arizona College of Medicine and Tucson Veterans Affairs Medical Center, Tucson, Arizona
5. Department of Urology, Loyola University Medical Center, Chicago, Illinois