1. Department of Gastrointestinal Surgery, Lab of Surgery, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, Guangdong, China
2. Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou 511436, Guangdong, China
3. Department of Hepatic Surgery and Liver Transplantation Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, Guangdong, China
4. Department of General Surgery, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, Guangdong, China
5. Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China