1. Department of Urologic Surgery, Vanderbilt University Medical Center, MCN A-1302, Nashville, TN 37027, USA
2. Vanderbilt University Medical Center, Nashville, TN, USA
3. Formerly of Endo Pharmaceuticals Inc., Malvern, PA, USA
4. Endo Pharmaceuticals Inc., Malvern, PA, USA
5. Chesapeake Urology Research Associates, Towson, MD, USA