1. Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine The Catholic University of Korea Seoul South Korea
2. Department of Internal Medicine Dongguk University Ilsan Hospital, Dongguk University College of Medicine Goyang South Korea
3. Department of Internal Medicine Yonsei University Wonju College of Medicine, Wonju Christian Hospital Wonju South Korea
4. Department of Internal Medicine Inje University Haeundae Paik Hospital Busan South Korea
5. Department of Internal Medicine Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea Seoul South Korea
6. Department of Internal Medicine Wonkwang University Hospital Iksan South Korea
7. Department of Internal Medicine Inje University, Seoul Paik Hospital Seoul South Korea
8. Department of Internal Medicine Yonsei University College of Medicine, Severance Hospital Seoul South Korea
9. Department of Internal Medicine Korea University College of Medicine Seoul South Korea
10. Department of Internal Medicine Uijeongbu St. Mary’s Hospital, College of Medicine, The Catholic University of Korea Uijeongbu South Korea
11. Department of Internal Medicine College of Medicine, Ewha Womans University Seoul South Korea
12. Department of Internal Medicine Hallym University Dongtan Sacred Heart Hospital Hwaseong South Korea
13. Department of Internal Medicine GangNeung Asan Hospital, College of Medicine, Ulsan University Gangneung South Korea
14. Department of Internal Medicine Kosin University College of Medicine Busan South Korea
15. Department of Gastroenterology Asan Medical Center, University of Ulsan Seoul South Korea
16. Digestive Disease Center CHA Bundang Medical Center, CHA University Seongnam South Korea
17. Department of Internal Medicine Konkuk University Medical Center Seoul South Korea
18. Department of Internal Medicine Yeungnam University College of Medicine Daegu South Korea
19. Department of Internal Medicine Keimyung University School of Medicine Daegu South Korea
20. Department of Internal Medicine Jeonbuk National University Hospital Jeonju South Korea
21. Department of Medicine Samsung Medical Center, Sungkyunkwan University Seoul South Korea
22. Department of Internal Medicine Seoul National University Bundang Hospital, Seongnam and Seoul National University College of Medicine Seoul South Korea
23. Department of Internal Medicine Soonchunhyang University College of Medicine Bucheon South Korea
24. Department of Internal Medicine Gyeongsang National University Changwon Hospital Changwon South Korea
25. Department of Internal Medicine Pusan National University College of Medicine and Biomedical Research Institute, Pusan National University Hospital Busan South Korea
26. Department of Gastroenterology Ajou University Hospital, Ajou University School of Medicine Suwon South Korea
27. Department of Internal Medicine Kyungpook National University Hospital Daegu South Korea
28. Department of Internal Medicine Hallym University College of Medicine/Institute for Liver and Digestive Diseases Chuncheon South Korea
29. Department of Internal Medicine Hanyang University College of Medicine Seoul South Korea