Jang H A1, Oh M M1, Kang S G1, Ko Y H1, Park J Y1, Yeo J K2, Choi J B3, Kim H J4, Lee J G1, Bae J H1
1. Korea university college of medicine, department of urology, Seoul, Korea, 2. Inje university Seoul Paik hospital, Department of urology, Seoul, Korea, 3. Ajou university School of Medicine, Department of Urology, Suwon, Korea, 4. Dankook university College of Medicine, departments of Urology, Cheonan, Korea