Affiliation: | 1. Department of General Surgery, Ruijin hospital, Shanghai Jiaotong University School of Medicine, Shanghai PR China ; 2. Shanghai Minimally Invasive Surgery Center, Ruijin hospital, Shanghai Jiaotong University School of Medicine, Shanghai PR China ; 3. Department of Obstetrics and Gynecology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai PR China |