Department of Urology, Chungbuk National University College of Medicine, Cheongju, Chungbuk 361-711, South Korea;
Department of Urology, Chungbuk National University College of Medicine, Cheongju, Chungbuk 361-711, South Korea;
Department of Urology, Chungbuk National University College of Medicine, Cheongju, Chungbuk 361-711, South Korea;
Department of Urology, School of Medicine, Kyungpook National University, Daegu 700-422, South Korea;
Department of Urology, Chungbuk National University College of Medicine, Cheongju, Chungbuk 361-711, South Korea;
Department of Urology, Chungbuk National University College of Medicine, Cheongju, Chungbuk 361-711, South Korea;
Department of Urology, Chungbuk National University College of Medicine, Cheongju, Chungbuk 361-711, South Korea;
Department of Urology, Chungbuk National University College of Medicine, Cheongju, Chungbuk 361-711, South Korea;
Department of Urology, Chungbuk National University College of Medicine, Cheongju, Chungbuk 361-711, South Korea;
Department of Urology, Chungbuk National University College of Medicine, Cheongju, Chungbuk 361-711, South Korea;