1. Department of Health Management, The Third Xiangya Hospital, Central South University, Changsha 410013, China
2. Department of Gastrointestinal Surgery, The Third Xiangya Hospital of Central South University, Changsha 410013, China
3. Department of Gastrointestinal, Hernia and Enterofistula Surgery, People’s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, China
4. Department of Pathology, The Third Xiangya Hospital of Central South University, Changsha 410013, China
5. Department of Pharmacy, The Third Xiangya Hospital, Central South University, Tongzipo Road, Changsha 410013, China