1. Department of Internal Medicine, University of Ulsan College of Medicine, Korea.
2. Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Korea.
3. Department of Radiology, Konkuk University School of Medicine, Korea.
4. Department of Surgery, Korea University College of Medicine, Korea.
5. Department of Internal Medicine, Kosin University College of Medicine, Korea.
6. National Cancer Center, Korea.
7. Department of Radiology, Daerim St. Mary's Hospital, Korea.
8. Radiation Health Research Institute, Korea.
9. Department of Internal Medicine, Seoul National University School of Medicine, Korea.
10. Department of Radiology, Seoul National University School of Medicine, Korea.
11. Department of Surgery, Seoul National University School of Medicine, Korea.
12. Department of Medicine, Sungkyunkwan University School of Medicine, Korea.
13. Department of Surgery, Sungkyunkwan University School of Medicine, Korea.
14. Department of Surgery, Yonsei University College of Medicine, Korea.
15. Department of Pathology, Yonsei University College of Medicine, Korea.
16. Department of Surgery, University of Ulsan College of Medicine, Korea.
17. Department of Radiology, University of Ulsan College of Medicine, Korea.
18. Department of Internal Medicine, Korea Cancer Center Hospital, Korea.
19. Department of Internal Medicine, School of Medicine, Eulji University, Korea.
20. Department of Internal Medicine, Chonnam National University Medical School, Korea.
21. Department of Internal Medicine, Chungnam National University College of Medicine, Korea.
22. Department of Surgery, Chungbuk National University College of Medicine, Korea.
23. Department of Surgery, Hallym University College of Medicine, Korea.
24. Department of Surgery, Yonsei University Wonju College of Medicine, Korea.