1. Department of Internal Medicine Kyung Hee University College of Medicine Seoul South Korea
2. Department of Internal Medicine Eulji University School of Medicine, Eulji Hospital Seoul South Korea
3. Division of Gastroenterology, Department of Internal Medicine Konyang University Hospital, Konyang University College of Medicine Daejeon South Korea
4. Department of Internal Medicine Dankook University College of Medicine Cheonan South Korea
5. Department of Internal Medicine Seoul Paik Hospital, Inje University College of Medicine Seoul South Korea
6. Department of Internal Medicine Hanyang University Guri Hospital Guri South Korea
7. Department of Internal Medicine Chungbuk National University Hospital, Chungbuk National University College of Medicine Cheongju South Korea
8. Departments of Internal Medicine Institute of Gastroenterology, Yonsei University College of Medicine Seoul South Korea
9. Department of Internal Medicine Seoul National University, College of Medicine, Seoul National University Bundang Hospital Seongnam‐si South Korea
10. Department of Gastroenterology and Inflammatory Bowel Disease Center, Asan Medical Center University of Ulsan College of Medicine Seoul South Korea
11. Clinical Research Team, Medical Affairs Janssen Korea Ltd. Seoul South Korea