1. Department of HBP Surgery II, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong
2. Department of Oncology, Third Xiangya Hospital of Central South University
3. The 940th Hospital of Joint Logistics Support force of Chinese People’s Liberation Army, Lanzhou
4. Department of Colorectal and Anal Surgery, Guangzhou First People’s Hospital, South China University of Technology, Guangzhou, Guangdong, China
5. Health Management Center, Xiangya Hospital, Central South University, Changsha, Hunan