[1]Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China; Fujian Medical University Union Hospital, Fuzhou, China; Zhongshan Hospital, Fudan University, Shanghai, China; Peking University Cancer Hospital & Institute, Beijing, China; Department of Gastrointestinal Surgery, Peking University Cancer Hospital and Institute, Beijing, China; Harbin Medical University Cancer Hospital, Harbin, China; West China Hospital, Sichuan University, Chengdu, China; Tangdu Hospital, Fourth Military Medical University, Xi'an, China; Wuhan Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Surgery, Renji Hospital, Medical College, Shanghai Jiao Tong University, Shanghai, China; Bethune First Hospital of Jilin University, Changchun, China; Third Affiliated Hospital of Sun Yatsen University, Guangzhou, China; Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Fujian Provincial Cancer Hospital, Fuzhou, China; People's Liberation Army General Hospital, Beijing, China; Department of Biostatistics, School of Public Health, Southern Medical University, Guangzhou, China; Nanfang Hospital, Southern Medical University, Guangzhou, China