1. Department of Gastroenterology The First Affiliated Hospital, Sun Yat‐Sen University Guangzhou Guangdong Province China
2. Department of Gastroenterology Xiangya Hospital Central South University Changsha Hunan Province China
3. Department of Gastroenterology Binzhou Medical University Hospital Binzhou Shandong Province China
4. Department of Gastroenterology Taihe Hospital Shiyan Hubei Province China
5. Department of Gastroenterology The Second Hospital, University of South China Hengyang Hunan Province China
6. Department of Gastroenterology Jiangxi Pingxiang People's Hospital Pingxiang Jiangxi Province China
7. Department of Gastroenterology The Second Affiliated Hospital, WenZhou Medical University Wenzhou Zhejiang Province China
8. Department of Gastroenterology The First Affiliated Hospital of University of South China Hengyang Hunan Province China
9. Department of Gastroenterology Jinan Central Hospital Jinan Shandong Province China
10. Department of Gastroenterology Zigong Fourth People's Hospital Zigong Sichuan Province China
11. Department of Gastroenterology First Hospital of Shanxi Medical University Taiyuan Shanxi Province China
12. Department of Gastroenterology Luo Yang First People's Hospital Luoyang Henan Province China
13. Department of Gastroenterology Zhongda Hospital Southeast University Nanjing Jiangsu Province China
14. Department of Gastroenterology The First Affiliated Hospital of Chongqing Medical University Chongqing China
15. Department of Gastroenterology Nanjing First Hospital Nanjing Jiangsu Province China
16. Department of Gastroenterology Nanjing Jiangning Hospital Nanjing Jiangsu Province China
17. Department of Gastroenterology Wuxi People's Hospital Affiliated to Nanjing Medical University Wuxi Jiangsu Province China
18. Department of Gastroenterology People's Hospital of Deyang City Deyang Sichuan Province China
19. Department of Gastroenterology The First Affiliated Hospital of Nanchang University Nanchang Jiangxi Province China
20. Department of Gastroenterology Affiliated Hospital of Zunyi Medical University Zunyi Guizhou Province China
21. Department of Gastroenterology The First Affiliated Hospital of Bengbu Medical College Bengbu Anhui Province China
22. Department of Gastroenterology China‐Japan Friendship Hospital Beijing China
23. Department of Gastroenterology Jilin Province People's Hospital Changchun Jilin Province China
24. Department of Gastroenterology Jiangsu Province Hospital Nanjing Jiangsu Province China
25. Department of Gastroenterology The Third Affiliated Hospital of Anhui Medical University Hefei Anhui Province China
26. Department of Gastroenterology General Hospital, Tianjin Medical University Tianjin China
27. Department of Gastroenterology Lishui Municipal Central Hospital Lishui Zhejiang Province China