1. Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, China
2. Key Laboratory of Tumor Immunology in Heilongjiang, Harbin Medical University Cancer Hospital, Harbin, China
3. Phase I Clinical Research Center, The Affiliated Hospital of Qingdao University in Shandong, Qingdao, China
4. Department of Pathology, Harbin Medical University Cancer Hospital, Harbin, China
5. Clinical Research Center for Colorectal Cancer in Heilongjiang, Harbin Medical University Cancer Hospital, Harbin, China