1. Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, People’s Republic of China
2. Department of Gastroenterology, Affiliated Hospital of Putian University, Putian, People’s Republic of China
3. Department of Gastroenterology, Peking University First Hospital, Beijing, People’s Republic of China
4. Department of Gastroenterology, 3rd Xiangya Hospital, Central South University, Changsha, People’s Republic of China
5. Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, People’s Republic of China
6. Department of Gastroenterology, Sino-Japanese Friendship Hospital of Jilin University, Changchun, People’s Republic of China
7. Department of Gastroenterology, First Affiliated Hospital of Shanxi Medical University, Taiyuan, People’s Republic of China
8. Department of Gastroenterology, Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, People’s Republic of China
9. Department of Gastroenterology, First Affiliated Hospital of Anhui Medical University, Hefei, People’s Republic of China
10. Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, People’s Republic of China
11. Department of Gastroenterology, Hainan Hospital of Chinese People's Liberation Army General Hospital, Sanya, People’s Republic of China
12. Department of Gastroenterology, First Affiliated Hospital of Nanjing Medical University, Nanjing, People’s Republic of China
13. Department of Gastroenterology, Aerospace Center Hospital, Beijing, People’s Republic of China
14. Department of Gastroenterology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
15. Department of Gastroenterology, Peking Union Medical College Hospital, Beijing, People’s Republic of China
16. Department of Gastroenterology, Zhongshan Hospital, Xiamen University, Xiamen, People’s Republic of China
17. Department of Gastroenterology, Affiliated Hospital of Qinghai University, Xining, People’s Republic of China
18. Department of Gastroenterology, Xi’an Central Hospital, Xi’an, People’s Republic of China
19. Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China
20. Department of Gastroenterology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China