1. Department of Radiology, Samsung Medical Center, Seoul, Republic of Korea.
2. Department of Internal Medicine, Seoul St Mary’s Hospital, The Catholic University of Korea, Seoul, Republic of Korea.
3. Department of Internal Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea.
4. Department of Radiology, Chosun University Hospital and Chosun University College of Medicine, Gwangju, Republic of Korea.
5. Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
6. Department of Radiology, Haeundae Paik Hospital, Inje University, College of Medicine, Busan, Republic of Korea.
7. Department of Radiology, Yeouido St Mary’s Hospital, The Catholic University of Korea, Seoul, Republic of Korea.
8. Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
9. Department of Radiology, Soonchunhyang University Hospital Bucheon, Soonchunhyang University College of Medicine, Bucheon, Republic of Korea.
10. Department of Radiology, Seoul National University Hospital, Seoul National University, Seoul, Republic of Korea.
11. Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea.
12. Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea.