Fujian Medical University - Union Hospital, University of Science and Technology of China (USTC) - The First Affiliated Hospital of USTC, Qingdao University - Department of Gastrointestinal Surgery, Qingdao University - Affiliated Hospital, Fudan University - Huashan Hospital, Chinese Academy of Medical Sciences - National Cancer Center, Anhui Medical University - First Affiliated Hospital, Shanghai Jiao Tong University (SJTU), School of Medicine, Ren Ji Hospital, Department of Gastroenterology, Putian University - Affiliated Hospital, Qingdao University - Yantai Yuhuangding Hospital, Zhengzhou University - Henan Cancer Hospital, Fujian Medical University, Fujian Medical University - Provincial Clinical College, Tianjin Medical University - General Hospital, Nanjing Medical University - First Affiliated Hospital, Anhui Medical University - First Affiliated Hospital, Shandong University - Liaocheng People's Hospital, Fujian Medical University - Quanzhou First Hospital, Soochow University - First Affiliated Hospital, Shanghai Jiao Tong University (SJTU) - Rui-Jin Hospital, Nanchang University - Second Affiliated Hospital, Guangdong Academy of Medical Sciences - Guangdong Provincial People's Hospital, Meizhou People's Hospital, Fujian Medical University - Zhangzhou Affiliated Hospital, University of Electronic Science and Technology of China (UESTC) - Sichuan Academy of Medical Sciences, Fujian Medical University - Union Hospital, Fujian Medical University - Union Hospital, Fujian Medical University - Union Hospital and Fujian Medical University - Department of Gastric Surgery