[1] Sun Yat Sen Univ, Affiliated Hosp 3, Dept Gastrointestinal Surg, Guangzhou, Guangdong, Peoples R China
[2] Beijing Canc Hosp, Dept Gastrointestinal Surg, Beijing, Peoples R China
[3] Peoples Liberat Army 301 Hosp, Gen Hosp, Dept Oncol, Beijing, Peoples R China
[4] China Med Univ, Liaoning Canc Hosp & Inst, Dept Hematol & Breast Canc, Canc Hosp, Shenyang, Peoples R China
[5] Southwest Hosp, Dept Gen Surg, Chongqing, Peoples R China
[6] Peking Univ, Peoples Hosp, Gastrointestinal Surg, Beijing, Peoples R China
[7] 3D Med Co Ltd, Dept Med, Shanghai, Peoples R China
[8] Jiangsu Prov Hosp, Dept Oncol, Nanjing, Jiangsu, Peoples R China