1. Department of Gastroenterology; Changhai Hospital; Second Military Medical University; Shanghai China
2. Department of Gastroenterology; Xinqiao Hospital; Third Military Medical University; Chongqing China
3. Department of Gastroenterology; Guangdong General Hospital; Guangzhou Guangdong Province China
4. Department of Gastroenterology; China-Japan Union Hospital; Jilin University; Changchun Jilin Province China
5. Department of Gastroenterology; Jinhua Municipal Central Hospital; Jinhua Zhejiang Province China
6. Department of Gastroenterology; Second Affiliated Hospital of Wenzhou Medical College; Wenzhou Zhejiang Province China
7. Department of Gastroenterology; Taizhou Hospital of Zhejiang Province; Linhai Zhejiang Province China
8. Department of Gastroenterology; Beijing Friendship Hospital; Capital Medical University; Xiamen Fujian Province China
9. Department of Gastroenterology; Peking University Third Hospital; Xiamen Fujian Province China
10. Department of Gastroenterology; First Affiliated Hospital; Sun Yat-sen University; Guangzhou Guangdong Province China
11. Department of Gastroenterology; Huadong Hospital Affiliated to Fudan University; Shanghai China
12. Department of Gastroenterology; First Affiliated Hospital of Xiamen University; Xiamen Fujian Province China
13. Department of Gastroenterology; Southwest Hospital; Third Military Medical University; Chongqing China
14. Department of Gastroenterology; Lanzhou University Second Hospital; Lanzhou Gansu Province China
15. Department of Gastroenterology; Daping Hospital; Third Military Medical University; Chongqing China
16. Department of Gastroenterology; Peking University First Hospital; Xiamen Fujian Province China
17. Department of Gastroenterology; Tongji Hospital; Huazhong University of Science and Technology; Wuhan Hubei Province China
18. Department of Gastroenterology; First Affiliated Hospital of Nanchang University; Nanchang Jiangxi Province China
19. Department of Gastroenterology; Union Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan Hubei Province China
20. Department of Gastroenterology; First Affiliated Hospital; Zhejiang University; Hangzhou Zhejiang Province China
21. Department of Gastroenterology; Zhongshan Hospital; Fudan University; Shanghai China
22. Department of Gastroenterology; Ruijin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
23. Department of Gastroenterology; Xijing Hospital of Digestive Diseases; Fourth Military Medical University; Xi'an Shaanxi Province China
24. Department of Gastroenterology; Nanfang Hospital; Southern Medical University; Guangzhou Guangdong Province China