1. Department of Colorectal Surgery The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou Guangdong 510655 P. R. China
2. Sun Yat‐sen University Cancer Center State Key Laboratory of Oncology in South China Collaborative Innovation Center of Cancer Medicine Guangzhou Guangdong 510060 P. R. China
3. Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases Guangdong Institute of Gastroenterology The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou Guangdong 510655 P. R. China
4. Department of Pathology The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou Guangdong 510060 P. R. China
5. Department of Endoscopic Surgery The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou Guangdong 510060 P. R. China
6. Department of Biomedical Sciences City University of Hong Kong Hong Kong SAR 999077 China
7. Cancer and Stem Cell Biology Program Duke‐NUS Medical School Singapore 169857 Singapore
8. Genome Institute of Singapore A*STAR Singapore 138672 Singapore
9. Affiliated Cancer Hospital and Institute of Guangzhou Medical University Guangzhou Guangdong 510095 P. R. China