1. Department of Radiology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea.
2. Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
3. Department of Radiology, Soonchunhyang University Hospital, Seoul, Korea.
4. Department of Radiology, Korea University Anam Hospital, Seoul, Korea.
5. Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul, Korea.
6. Department of Radiology, Korea University Guro Hospital, Seoul, Korea.