1. Department of Gastroenterology, Daping Hospital Army Medical University Chongqing China
2. Department of Gastroenterology The Third Affiliated Hospital of Chongqing Medical University Chongqing China
3. Department of Interventional Radiology, Nanchong Central Hospital, The Second Clinical Medical College The North Sichuan Medical College (University) Nanchong Sichuan China
4. Department of Gastroenterology Fuling Central Hospital Affiliated to Chongqing University Chongqing China
5. Department of Hepatology Chongqing University Three Gorges Hospital Chongqing China
6. Department of Gastroenterology Leshan People's Hospital of Sichuan Leshan Sichuan China
7. Department of Gastroenterology Qianjiang Central Hospital of Chongqing Chongqing China
8. Department of Gastroenterology The Ninth People's Hospital of Chongqing Chongqing China