1. Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
2. Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
3. Department of Gastroenterology and Digestive Disease Research Institute, Wonkwang University School of Medicine, Iksan, Jeollabuk-do, Korea
4. Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
5. Department of BioNano Technology and Gachon BioNano Research Institute, Gachon University, Seongnam, Gyeonggi-do, Korea