1. Department of Urology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
2. Department of Urology, Inje University Haeundae Paik Hospital, Busan, South Korea
3. Department of Urology, Eulji Medical College, Eulji Hospital, Daejon, South Korea
4. Department of Nuclear Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea