[1] Chinese Acad Med Sci, Dept Med Oncol, Canc Inst Hosp, Beijing 100730, Peoples R China
[2] Peking Union Med Coll, Beijing 100021, Peoples R China
[3] Beijing Key Lab Clin Study Anticanc Mol Targeted, Beijing, Peoples R China
[4] Chinese Acad Med Sci, Canc Inst Hosp, Beijing 100730, Peoples R China
[5] Chinese Acad Med Sci, Dept Med Oncol, Canc Hosp, Beijing 100730, Peoples R China
[6] Chinese Acad Med Sci, Canc Hosp, Beijing 100730, Peoples R China