作者单位:Zhejiang Univ, Sch Med, Sir Run Run Shaw Hosp, Dept Gen Surg, 3 Qingchun East Rd, Hangzhou 310016, Zhejiang, Peoples R China[1]Zhejiang Chinese Med Univ, Lab Anim Res Ctr, Hangzhou, Zhejiang, Peoples R China[2]Peoples First Hosp Xiaoshan, Dept Gen Surg, Hangzhou, Zhejiang, Peoples R China[3]Zhejiang Prov Peoples Hosp, Dept Gen Surg, Hangzhou, Zhejiang, Peoples R China[4]