[1] Sichuan Univ, West China Hosp, Dept Thorac Oncol, Chengdu 610064, Sichuan, Peoples R China
[2] State Key Lab Biotherapy, Chengdu, Sichuan, Peoples R China
[3] Canc Hosp Yunnan Prov, Dept Med Oncol, Kunming, Peoples R China
[4] Second Renmin Hosp Yibin City, Dept Med Oncol, Yibin, Peoples R China
[5] Kunming Med Univ, Affiliated Hosp 1, Dept Thorac Surg, Kunming, Peoples R China