1. Department of Gastroenterology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
2. Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
3. Hepatobiliary & Gastrointestinal Ward 3, Henan Province Hospital of TCM, Zhengzhou, China
4. Department of Gastroenterology, Ankang City Center Hospital, Ankang, China
5. Department of Gastroenterology, The First People’s Hospital of Yunnan Province, Kunming, China
6. Digestive Endoscopy Center, Shanxi Provincial people’s Hospital, Taiyuan, China
7. Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin, China
8. Department of Gastroenterology, People’s Hospital of Baoan District, Shenzhen, China
9. Department of Gastroenterology, Wenzhou Central Hospital, Wenzhou, China
10. Department of Gastroenterology, The Second Hospital of Dalian Medical University, Dalian, China
11. Department of Gastroenterology, The Second Affiliated Hospital of Soochow University, Suzhou, China
12. Department of Digestion, The People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
13. Department of Gastroenterology, The First Medical Center of Chinese PLA General Hospital, Beijing, China