1. State Key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi’an, China
2. Department of Medicine and Therapeutics and Institute of Digestive Disease, Chinese University of Hong Kong, Hong Kong, China
3. Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University School of Oncology, Peking University Cancer Hospital & Institute, Beijing, China
4. Tumor Etiology and Screening, Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China
5. Renji Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China