1. Department of Urology; Asan Medical Center; University of Ulsan College of Medicine; Seoul Korea
2. Department of Urology; Severance Hospital; Yonsei University College of Medicine; Seoul Korea
3. Department of Urology; Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea
4. Department of Urology; Pusan National University Hospital; Busan Korea
5. Department of Urology; Seoul National University Hospital; Seoul Korea
6. Department of Urology; Cheil General Hospital & Women's Healthcare Center; Kwandong University College of Medicine; Seoul Korea
7. Department of Urology; Ajou University Hospital; Suwon Korea
8. Department of Urology; Seoul St. Mary's Hospital; The Catholic University of Korea; Seoul Korea
9. Kwang Dong Pharmaceutical Co. Ltd.; Kyungki-Do Korea