1. Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
2. Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, China
3. Hubei Provincial Clinical Research Center for Digestive Disease Minimally Invasive Incision, Renmin Hospital of Wuhan University, Wuhan, China
4. Department of Gastroenterology, Wuhan No. 1 Hospital, Wuhan, China
5. Department of Gastroenterology, Wuhan Third Hospital, Wuhan, China
6. Department of Gastroenterology, Taizhou Hospital of Zhejiang Province, Zhejiang, China