1. Department of GastroenterologyFirst Affiliated Hospital of Nanchang University Jiangxi China
2. Department of GastroenterologyNanjing First Hospital Jiangsu China
3. Department of GastroenterologyRenji HospitalShanghai Jiao Tong University School of Medicine Shanghai China
4. Department of GastroenterologyChanghai HospitalSecond Military Medical University Shanghai China
5. Department of GastroenterologyPeking University First Hospital Beijing China
6. Department of GastroenterologyThe First Affiliated Hospital of Anhui Medical University Anhui China
7. Department of GastroenterologyQinghai University Affiliated Hospital Qinghai China
8. Department of GastroenterologyFirst Hospital of Shanxi Medical University Shanxi China
9. Department of GastroenterologyXiangya Hospital of Central South University Hunan China
10. Department of GastroenterologyDaping Hospital and the Research Institute of Surgery of Third Military Medical University Chongqing China
11. Department of GastroenterologyFirst Affiliated Hospital of Kunming Medical College Yunnan China
12. Department of GastroenterologyQilu Hospital of Shandong University Shandong China
13. Department of GastroenterologyGuangzhou First People's Hospital Guangdong China
14. Department of GastroenterologyJiangsu Province Hospital Jiangsu China
15. Department of GastroenterologyNanfang HospitalSouthern Medical University Guangzhou China
16. Department of GastroenterologyChina‐Japan Union Hospital of Jilin University Changchun Jilin China