1. Departments of Gastroenterology, Ajou Research Institute for Innovative Medicine, Ajou University School of Medicine, Suwon, Korea
2. Departments of Biomedical Informatics, Ajou Research Institute for Innovative Medicine, Ajou University School of Medicine, Suwon, Korea
3. Office of Biostatistics, Ajou Research Institute for Innovative Medicine, Ajou University School of Medicine, Suwon, Korea
4. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
5. Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
6. Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea
7. Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
8. Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
9. Division of Hepatology, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
10. Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea