1. Department of Surgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia
2. Department of Radiology, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
3. College of Medicine, King Saud University, Riyadh, Saudi Arabia
4. College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
5. Department of Urology, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia