1. Department of Radiology, Ajou University Hospital, Ajou University School of Medicine, Suwon, Republic of Korea.
2. Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
3. Department of Radiology, Inha University Hospital, Inha University School of Medicine, Incheon, Republic of Korea.
4. Department of Radiology, Konkuk University Hospital, Konkuk University School of Medicine, Seoul, Republic of Korea.
5. Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
6. Department of Radiology, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea.
7. Department of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
8. Department of Radiology, Pusan National University Hospital, Pusan National University College of Medicine, Busan, Republic of Korea.