1. Department of Colorectal Cancer Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
2. College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, China
3. Department of Pathology, Harbin Medical University, Harbin, China
4. Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou, China