Fujian Medical University - Department of Gastric Surgery, Peking University - Key Laboratory of Carcinogenesis and Translational Research, Fudan University - Department of Gastric Surgery, Shandong First Medical University - Shandong Provincial Hospital, Southern Medical University - Department of General Surgery, Nanchang University - Department of Digestive Surgery, Zhejiang University - Department of General Surgery, Shanghai Jiao Tong University (SJTU) - Department of General Surgery, Fudan University - Department of General Surgery, Fujian Medical University - Department of Gastric Surgery, Guangdong Academy of Medical Sciences - Department of General Surgery, Xi'an Jiaotong University (XJTU) - Department of General Surgery, Fudan University - Zhongshan Hospital, Dalian Medical University, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Peking Union Medical College Hospital, China Medical University, Qingdao University, Zhejiang University - Department of General Surgery, Sun Yat-sen University (SYSU) - Department of Gastrointestinal Surgery, Xiamen University - Department of Gastrointestinal Surgery, Qinghai University, Peking University - Key Laboratory of Carcinogenesis and Translational Research and Fudan University - Department of Gastric Surgery