[1] Huazhong Univ Sci & Technol, Tongji Med Coll, Affiliated Tongji Hosp, Canc Res Ctr,Dept Biliary & Pancreat Surg, Wuhan 430030, Hubei, Peoples R China
[2] Huazhong Univ Sci & Technol, Tongji Med Coll, Dept Obstet & Gynecol, Union Hosp, Wuhan, Hubei, Peoples R China
[3] Wuhan Univ, Zhongnan Hosp, Dept Hepatobiliary Pancreat Surg, Wuhan, Hubei, Peoples R China
[4] Huazhong Univ Sci & Technol, Tongji Med Coll, Dept Oncol, Affiliated Tongji Hosp, Wuhan, Hubei, Peoples R China
[5] Wuhan Univ Sci & Technol, Affiliated Tianyou Hosp, Wuhan 430064, Peoples R China