Affiliation: | 1. Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China 2. Department of General Surgery, Xiangya Third Hospital, Central South University, Changsha, Hunan 410013, China 3. Department of General Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China |