[1] Guangzhou Med Univ, State Key Lab Resp Dis, Guangzhou Inst Resp Dis, Affiliated Hosp 1, Guangzhou 510182, Guangdong, Peoples R China
[2] Peking Univ, Hosp 3, Dept Resp Med, Beijing 100871, Peoples R China
[3] Capital Univ Med Sci, Beijing Inst Resp Med, Beijing Chaoyang Hosp, Beijing, Peoples R China
[4] Second Hosp Liwan Dist Guangzhou, Dept Resp Med, Guangzhou, Guangdong, Peoples R China
[5] Jinan Univ, Dept Resp Med, Affiliated Hosp 1, Jinan, Peoples R China
[6] Guangzhou Med Univ, Dept Epidemiol, Guangzhou 510182, Guangdong, Peoples R China
[7] Shenyang Mil Gen Hosp, Dept Resp Med, Shenyang, Peoples R China
[8] China Med Univ, Dept Resp Med, Affiliated Hosp 1, Shenyang, Peoples R China
[9] Shanghai Jiao Tong Univ, Dept Resp Med, Ruijin Hosp, Sch Med, Shanghai 200030, Peoples R China
[10] Tianjin Med Univ, Gen Hosp, Dept Resp Med, Tianjin, Peoples R China
[11] Third Mil Med Univ, Dept Resp Med, Xinqiao Hosp, Chongqing, Peoples R China
[12] Fourth Mil Med Univ, Dept Resp Med, Xijing Hosp, Xian 710032, Peoples R China
[13] First Municipal People Hosp Shaoguan, Dept Resp Med, Shaoguan, Peoples R China