1. From the Departments of Urology, Sungkyunkwan University School of Medicine, University of Ulsan College of Medicine and Catholic University of Korea, Seoul, Catholic University of Daegu, Daegu, Dankook University College of Medicine, Chonan, Inje University School of Medicine, Busan, Gachon Medical School and Inha University College of Medicine, Incheon and Wonkwang University, Iksan, Korea