Marshall C Strother1, Steven Weissbart2, John S Brooks3, Ariana L Smith4. 1. Division of Urology, University of Pennsylvania, Philadelphia, PA. Electronic address: Marshall.Strother@uphs.upenn.edu. 2. Division of Urogynecology and Pelvic Reconstructive Surgery, Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, PA. 3. Department of Pathology, Pennsylvania Hospital, Philadelphia, PA. 4. Division of Urology, University of Pennsylvania, Philadelphia, PA.