[1] Peking Univ, Minist Educ Beijing, Dept Gastrointestinal Oncol, Key Lab Carcinogenesis & Translat Res,Canc Hosp In, Beijing 100142, Peoples R China
[2] Dalian Med Univ, Affiliated Hosp 1, Dept Gen Surg, Dalian 116011, Peoples R China
[3] Sun Yat sen Univ, Sun Yat sen Mem Hosp, Dept Hepatobiliary Surg, Guangzhou 116011, Peoples R China
[4] Third Mil Med Univ, Army Med Univ, Southwest Hosp, Dept Oncol, Chongqing 400038, Peoples R China
[5] Third Mil Med Univ, Army Med Univ, Southwest Hosp, Southwest Canc Ctr, Chongqing 400038, Peoples R China
[6] MSD China, Value & Implementat, Global Med & Sci Affairs, Shanghai 200233, Peoples R China