1. Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Center for Cancer Bioinformatics, Peking University Cancer Hospital & Institute, Beijing 100142, China
2. Department of Pathology, Peking University Cancer Hospital & Institute, Beijing 100142, China
3. Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
4. Peking University International Cancer Institute, Peking University, Beijing 100191, China