1. Department of Radiology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
2. Department of Biomedical Engineering, Gachon University College of Medicine, Gil Medical Center, Incheon, Korea
3. Department of Pathology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
4. Department of Urology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea.