1. Department of Medical Oncology; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine; Guangzhou 510060 Guangdong P. R. China
2. Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Gastrointestinal Oncology; Peking University Cancer Hospital and Institute; Beijing 100142 P. R. China
3. Department of Oncology, Shanghai East Hospital; Tongji University School of Medicine; Shanghai 200120 P. R. China
4. Department of Gastric Surgery; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine; Guangzhou 510060 Guangdong P. R. China
5. Department of Gastric Cancer; Tianjin Medical University Cancer Institute & Hospital, National Clinical Research Center of Cancer, Tianjin's Clinical Research Cancer for Cancer, Key Laboratory of Cancer Prevention and Therapy; Tianjin 300060 P. R. China
6. Medical Imaging Department, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Gastrointestinal Oncology; Peking University Cancer Hospital and Institute; Beijing 100142 P. R. China
7. Pathology Laboratory of Gastrointestinal Tumor; The First Hospital of China Medical University; Shenyang 110001 Liaoning P. R. China
8. Department of Radiation Oncology, National Cancer Center; China and Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing 100021 P. R. China
9. Department of Radiotherapy; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine; Guangzhou 510060 Guangdong P. R. China
10. Department of Medical Oncology; Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology; Wuhan 430030 Hubei P. R. China
11. Department of Medical Oncology; Zhongshan Hospital Affiliated to Fudan University; Shanghai 200032 P. R. China
12. Department of General Surgery; Nanfang Hospital Affiliated to Southern Medical University; Guangzhou 510515 Guangdong P. R. China
13. Department of Endoscopy Center, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Gastrointestinal Oncology; Peking University Cancer Hospital and Institute; Beijing 100142 P. R. China
14. Department of Surgical Oncology; The First Hospital of China Medical University; Shenyang 110001 Liaoning P. R. China