[1] Ningbo Univ, Affiliated Hosp 1, Dept Hernia & Hepatobiliary Surg, Zhejiang, Peoples R China
[2] Shanghai Jiao Tong Univ, Shanghai Gen Hosp, Gen Surg Ctr, Sch Med,Gastrointestinal Surg Dept, Shanghai, Peoples R China
[3] Fudan Univ, Shanghai Pudong Hosp, Pudong Med Ctr, Dept Gen Surg, Shanghai, Peoples R China
[4] Shanghai Univ Tradit Chinese Med, Putuo Hosp, Dept Minimally Invas Surg, Shanghai, Peoples R China
[5] Tongji Univ, Shanghai East Hosp, Dept Hernia & Abdominal Wall Surg, 150 Jimo Rd, Shanghai, Peoples R China