1. Department of Gastroenterology; Changhai Hospital; Second Military Medical University
2. Department of Gastroenterology; The General Hospital of the People's Liberation Army (Hospital 301)
3. Department of Gastroenterology; Peking University People's Hospital
4. Department of Gastroenterology; Beijing Friendship Hospital
5. Department of Gastroenterology; Peking Union Medical College Hospital
6. Department of Gastroenterology; Peking University Third Hospital; Beijing
7. Department of Gastroenterology; Beijing Chaoyang Hospital; Capital Medical University
8. Department of Gastroenterology; Daping Hospital
9. Department of Gastroenterology; Southwest Hospital
10. Department of Gastroenterology; Xijing Hospital of Digestive Diseases; The Fourth Military Medical University; Xi'an Shaanxi
11. Department of Gastroenterology; Huadong Hospital; Fudan University
12. Department of Gastroenterology; Guangdong Provincial People's Hospital
13. Department of Gastroenterology; Guangzhou First Municipal People's Hospital, Affiliated Guangzhou Medical College
14. Department of Gastroenterology; The First People's Hospital of Hangzhou
15. Department of Gastroenterology; The First Hospital; Jilin University; Changchun Jinlin
16. Department of Gastroenterology; The First Affiliated Hospital, Nanchang University; Nanchang Jiangxi
17. Department of Gastroenterology; Nanfang Hospital; Southern Medical University
18. Department of Gastroenterology; Affiliated Drum Tower Hospital of Nanjing University Medical School; Nanjing
19. Department of Gastroenterology; Renji Hospital
20. Department of Gastroenterology; Xinhua Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai
21. Department of Gastroenterology; Shengjing Hospital of China Medical University
22. Department of Gastroenterology; The First Affiliated Hospital of Suzhou University; Suzhou Jiangsu
23. Department of Gastroenterology; General Hospital of Tianjin Medical University; Tianjin
24. Department of Gastroenterology; Xiangya Hospital; Central South University; Changsha Hunan China
25. Department of Gastroenterology; The First affiliated Hospital of Zhejiang University School of Medicine; Hangzhou Zhejiang
26. Department of Gastroenterology; The First Affiliated Hospital of China Medical University; Shenyang Liaoning
27. Department of Gastroenterology; The Second Affiliated Hospital of Sun Yat-sen University
28. Department of Gastroenterology; The First Affiliated Hospital of Sun Yat-sen University; Guangzhou Guangdong
29. Department of Gastroenterology; Xinqiao Hospital; The Third Military Medical University; Chongqing