1. Department of Radiation Oncology Sun Yat‐sen University Cancer Center Guangzhou China
2. Sun Yat‐sen University Cancer Center State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine Guangzhou China
3. Department of General Surgery Shantou Central Hospital Shantou China
4. Department of Abdominal Surgery Cancer Hospital of Shantou University Medical College Shantou China
5. Department of Radiation Oncology Sun Yat‐sen Memorial Hospital, Sun Yat‐sen University Guangzhou China
6. Department of Colorectal Surgery Sun Yat‐sen University Cancer Center Guangzhou China
7. Department of Radiation Oncology Zhongshan People's Hospital Zhongshan China
8. Department of Medical Imaging and Interventional Radiology Sun Yat‐sen University Cancer Center Guangzhou China