1. Department of Radiology, Ajou University School of Medicine, Suwon, Korea.
2. Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
3. Department of Radiology, GangNeung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea.
4. Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea.
5. Department of Radiology, Ewha Womans University School of Medicine, Seoul, Korea.
6. Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
7. Department of Radiology, Hanyang University College of Medicine, Hanyang University Hospital, Seoul, Korea.
8. Department of Radiology, Haeundae Sharing and Happiness Hospital, Busan, Korea.
9. Department of Radiology, Kangwon National University Hospital, Chuncheon, Korea.
10. Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
11. Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
12. Department of Radiology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
13. Department of Radiology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.
14. Department of Radiology, New Korea Hospital, Gimpo, Korea.
15. Department of Radiology, Research Institute and Hospital, National Cancer Center, Goyang, Korea.
16. Departments of Radiology, Jeju National University, Jeju, Korea.
17. Department of Radiology, Ansan Hospital, Korea University College of Medicine, Ansan, Korea.
18. Department of Radiology, Soonchunhyang University Seoul Hospital, Seoul, Korea.
19. Department of Radiology, Withsim Clinic, Seongnam, Korea.
20. Department of Radiology and Thyroid Center, Daerim St. Mary's Hospital, Seoul, Korea.
21. From the Department of Radiology, Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea.
22. Division for Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea.