[1] Peking Univ, Inner Mongolia Med Univ, Inner Mongolia Canc Ctr, Canc Hosp,Dept Radiat Oncol,Affiliated Canc Hosp, Inner Mongolia Campus, Hohhot 010020, Peoples R China
[2] Peking Univ, Minist Educ Beijing, Key Lab Carcinogenesis & Translat Res, Beijing Off Canc Prevent & Control,Canc Hosp & Ins, Beijing 100142, Peoples R China
[3] Peking Univ, Minist Educ, Key Lab Carcinogenesis & Translat Res, Canc Hosp & Inst, Beijing 100142, Peoples R China
[4] Peking Univ, Minist Educ Beijing, Dept Gastrointestinal Oncol, Key Lab Carcinogenesis & Translat Res,Canc Hosp &, Beijing 100142, Peoples R China
[5] Peking Univ, Gastrointestinal Canc Ctr, State Key Lab Holist Integrat Management Gastroint, Beijing Key Lab Carcinogenesis & Translat Res,Canc, Beijing 100142, Peoples R China