1. Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, China
2. Department of Colorectal Surgery, Gansu Provincial Hospital, Lanzhou, China
3. Department of Pathology, West China Hospital, Sichuan University, Chengdu, China
4. Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
5. Department of Abdominal Cancer, West China Hospital, Sichuan University, Chengdu, China
6. Department of Oncology, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, China