Institution: | 1. Department of Gastrointestinal and Pancreatic Surgery, the First Affiliated Hospital,Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China;Department of General Surgery, Guangdong Provincial People's Hospital, Guangzhou 510080, Guangdong Province,China 2. Zhong Shan Medical College, Sun Yat-sen University, Guangzhou 510089, Guangdong Province, China 3. Department of Gastrointestinal and Pancreatic Surgery, the First Affiliated Hospital,Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China |