1. Department of Pediatric Urology, Seoul National University Children’s Hospital, Seoul, Korea.
2. Department of Urology, Seoul National University College of Medicine, Seoul, Korea.
3. Department of Health Care Policy Research Institute for Health and Social Affairs, Sejong, Korea.
4. Department of Urology, Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea.
5. Department of Urology, Pusan National University School of Medicine, Busan, Korea.
6. Department of Urology, Pusan National University Yangsan Hospital, Yangsan, Korea.
7. Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.