1. Department of Biomedical Science, Kyung Hee University, Seoul, Korea
2. Department of Urology, Chungnam National University Hospital, Daejon, Korea
3. Department of Urology, Chungnam National University Sejong Hospital, Sejong, Korea
4. Department of Medical Informatics, Chung-Ang University, Seoul, Korea
5. Department of Urology, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, Korea