1 Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
2 Department of Colorectal Surgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China.
3 Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Fujian Medical University, Fujian, China.
4 Division of Colorectal Surgery, Department of Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
5 Department of General Surgery, Fujian Provincial Cancer Hospital, Fujian, China.
6 Department of Gastrointestinal Oncology Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China.
7 Department of General Surgery, Chinese PLA General Hospital, Beijing, China.
8 Department of General Surgery, The First Affiliated Hospital of Xi'an Jiao Tong University, Shaanxi, China.
9 Department of Gastrointestinal Surgery, Department of General Surgery, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China.
10 Department of General Surgery, Meizhou People's Hospital, Meizhou, Guangdong, China.
11 Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
12 Department of General Surgery, Affiliated Hospital of Qinghai University, Qinghai, China.
13 Department of General Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong, China.
14 Department of General Surgery, The First Hospital of China Medical University, Liaoning, China.
15 Department of Gastrointestinal Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, China.
16 Department of Gastrointestinal and Anal Surgery, Affiliated Hangzhou First People's Hospital, Westlake University, School of Medicine, Hangzhou, Zhejiang, China.
17 State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing, China.
18 Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
19 Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
20 Department of General Surgery, Fudan University Shanghai Cancer Centre, Shanghai, China.
21 Department of General Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, China.
22 Department of General Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China.
23 Department of General Surgery, The First Affiliated Hospital of Jilin University, Jilin, China.