1. Department of Digestive Diseases 1 Cancer Hospital of China Medical University, Cancer Hospital of Dalian University of Technology, Liaoning Cancer Hospital & Institute Shenyang China
2. Department of General Surgery The Affiliated Bozhou Hospital of Anhui Medical University Bozhou China
3. Department of Gastric Surgery Cancer Hospital of China Medical University, Cancer Hospital of Dalian University of Technology, Liaoning Cancer Hospital & Institute Shenyang China