1. Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
2. Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
3. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yeungnam University College of Medicine, Daegu, Korea
4. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jeonbuk National University Medical School and Hospital, Jeonju, Jeollabuk-do, Korea
5. Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Hallym College of Medicine, Hallym University, Anyang, Gyeonggi-do, Korea
6. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Jeonbuk National University Medical School, Jeonju, Jeollabuk-do, Korea
7. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
8. Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
9. Institute for Digestive Research, Digestive Disease Center, Soonchunhyang University College of Medicine, Seoul, Korea
10. Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
11. Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
12. Department of Internal Medicine, Ajou University School of Medicine, Suwon, Gyeonggi-do, Korea
13. Department of Internal Medicine, Hanyang University School of Medicine, Seoul, Korea
14. Division of Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaboration Agency, Seoul, Korea