Affiliation: | 1.Department of General Surgery, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China;2.Department of General Surgery, Affiliated Hospital of Taishan Medical University, Taian 271000, P.R. China;3.Department of General Surgery, First People’s Hospital of Taian, Taian 271000, P.R. China |