Affiliation: | 1.Department of Hand and Foot Surgery, Brain Hospital of Hunan Province, No. 427, Section 3 of Furong Middle Road, Changsha, 410007, Hunan Province, China ;2.Department of Gastrointestinal Surgery, Second Xiangaya Hospital, Central South University, No. 139 Renmin Road, Furong District, Changsha, 410011, Hunan Province, China ; |