Seung-Kwon Choi1, Yang-Gyun Kim2, Koo Han Yoo1, Dong-Gi Lee1, Gyeong Eun Min1, Hyung-Lae Lee1
1Department of Urology, School of Medicine, Kyung Hee University, Seoul, Korea
2Department of Nephrology, School of Medicine, Kyung Hee University, Seoul, Korea