1. Department of Urology, University of California, Irvine, Irvine, California, USA.
2. Department of Urology, University of Medicine and Pharmacy Ho Chi Minh City, Cho Ray Hospital, Ho Chi Minh City, Vietnam.
3. School of Medicine, University of California, Irvine, Irvine, California, USA.
4. Department of Surgery, Clemenceau Medical Center, Dubai, United Arab Emirates.