1. Department of Surgery, King Hussein Cancer Center, Amman, Jordan.
2. Division of Urology, Department of Surgery, American University of Beirut Medical Center, Beirut, Lebanon.
3. Division of Urology, Department of Surgery, Penn Presbyterian Medical Center, Philadelphia, Pennsylvania, USA.
4. Department of Urology, The James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
5. Clinical Research Institute, American University of Beirut, Beirut, Lebanon.