1. Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, Korea
2. Department of Digestive Disease Center, Soonchunhyang University Hospital, Seoul, Korea
3. Department of Data Innovation, Soonchunhyang University College of Medicine, Seoul, Korea
4. Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, Korea
5. Department of Internal Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea
6. Department of Internal Medicine, Dankook University College of Medicine, Cheonan, Korea
7. Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea