1. Institute for Clinical Molecular Biology Research, Soonchunhyang University Hospital, Soonchunhyang University College of Medicine, Seoul, Korea.
2. Department of Urology, Soonchunhyang University College of Medicine, Seoul, Korea.
3. Department of Urology, Chung-Ang University Hospital, Urological Science Institute, Chung-Ang University College of Medicine, Seoul, Korea.
4. Department of Education, College of Education, Jeonju University, Jeonju, Korea.
5. Department of Social Welfare, Kyungpook National University College of Social Science, Daegu, Korea.
6. Department of Urology, Gil Hospital, Gachon University College of Medicine, Incheon, Korea.