1. Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
2. Department of Internal Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
3. Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang, Korea
4. Department of Internal Medicine, Ewha Womans University Seoul Hospital, Seoul, Korea
5. Department of Internal Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea
6. Department of Internal Medicine, Seoul Medical Center, Seoul, Korea
7. Department of Internal Medicine, Jeonbuk National University Hospital, Jeonju, Korea
8. Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea
9. Department of Pediatrics, Seoul Metropolitan Children’s Hospital, Seoul, Korea
10. Department of Internal Medicine, Wonkwang University College of Medicine and Hospital, Iksan, Korea
11. Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Korea
12. Department of Internal Medicine, Uijeongbu St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
13. Yonsei Wonju Medical Library, Yonsei University Wonju College of Medicine, Wonju, Korea
14. Division of Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
15. Department of Urology, Yonsei University Wonju College of Medicine/Center of Evidence Based Medicine Institute of Convergence Science, Wonju, Korea
16. Division of Gastroenterology, Department of Internal Medicine, CHA Gangnam Medical Center, CHA University, Seoul, Korea