[1] Guangzhou Med Univ, Affiliated Hosp 1, State Key Lab Resp Dis, Guangzhou, Guangdong, Peoples R China
[2] Third Mil Med Univ, Xin Qiao Hosp, Inst Resp Dis, Chongqing, Peoples R China
[3] Third Mil Med Univ, Southwest Hosp, Dept Resp Med, Chongqing, Peoples R China
[4] Novartis Pharma AG, Resp, Basel, Switzerland
[5] Beijing Novartis Pharma Co Ltd, Resp, Beijing, Peoples R China
[6] Novartis Pharmaceut, Resp, E Hanover, NJ USA