[1] Xiamen Univ, Affiliated Hosp 1, Oncol Ctr Xiamen, Dept Hepatobiliary & Pancreatovasc Surg, Xiamen 361003, Fujian, Peoples R China
[2] Second Mil Med Univ, Eastern Hepatobiliary Surg Hosp, Dept Hepat Surg 4, Shanghai, Peoples R China
[3] Lanzhou Univ, Hosp 2, Dept Gen Surg, Lanzhou 730000, Peoples R China