1. Department of Urology, Ajou University School of Medicine, Suwon, Korea.
2. Department of Urology, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Urology, Inha University College of Medicine, Incheon, Korea.
4. Department of Urology, Keimyung University School of Medicine, Daegu, Korea.
5. Department of Urology, University of Ulsan College of Medicine, Ulsan, Korea.
6. Department of Urology, Hallym University College of Medicine, Anyang, Korea.
7. Department of Urology, Soonchunhyang University College of Medicine, Seoul, Korea.
8. National Institute of Health Corporation Ilsan Hospital, Goyang, Korea.
9. Department of Urology, Inje University College of Medicine, Goyang, Korea.
10. Department of Urology, Ewha Woman's University College of Medicine, Seoul, Korea.
11. Department of Urology, Konyang University College of Medicine, Daejeon, Korea.
12. Department of Urology, Konkuk University School of Medicine, Chungju, Korea.
13. Department of Urology, Sungkyunkwan University College of Medicine, Seoul, Korea.