Institution: | (1) The Department of Urology, Columbia University College of Physicians and Surgeons, 630 W. 168th St., 10032 New York, NY;(2) The Division of Urology, University of Pennsylvania School of Medicine and Veterans Administration Medical Center, 3006 Ravdin Courtyard Bldg., 3400 Spruce St., 19104 Philadelphia, PA, USA |