1Institute for Digestive Research, Digestive Disease Center, Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, Korea
2Department of Internal Medicine, College of Medicine, Chungnam National University, Daejeon, Korea
3Department of Internal Medicine, Guro Hospital, Korea University College of Medicine, Seoul, Korea
4Department of Internal Medicine, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
5Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
6Department of Internal Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea
7Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
8Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
9Department of Internal Medicine, Soonchunhyang University College of Medicine, Bucheon, Korea
10Soonchunhyang Institute of Medi-bio Science (SIMS), Soonchunhyang University, Cheonan, Korea
11Department of Biostatistics, Soonchunhyang University Hospital, Seoul, Korea
12Department of Applied Statistics, Chung-Ang University, Seoul, Korea
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