1 Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, 651 Dongfeng Road East, Guangzhou, 510060, Guangdong, People's Republic of China.
2 Department of Colorectal Surgery, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical University, Kunming, 650000, Yunnan, People's Republic of China.
3 Department of Pathology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Guangzhou, 510060, Guangdong, People's Republic of China.
4 Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, 651 Dongfeng Road East, Guangzhou, 510060, Guangdong, People's Republic of China. fengcheng@sysucc.org.cn.
5 Department of Colorectal Surgery, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical University, Kunming, 650000, Yunnan, People's Republic of China. zhangxuan66@kmmu.edu.cn.
6 Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, 651 Dongfeng Road East, Guangzhou, 510060, Guangdong, People's Republic of China. luzhh@sysucc.org.cn.