[Jia, Aijun; Qiu, Lulu; Sun, Wenjin] Cent South Univ, Xiangya Hosp 2, Hunan Ctr Evidence Based Med, Dept Resp Med,Res Unit Resp Dis, 139 Middle Renmin Rd, Changsha 410011, Hunan, Peoples R China.
[Zhang, Dongshan; Jia, Aijun; Xiang, Xudong; Xiao, Bing] Cent South Univ, Xiangya Hosp 2, Inst Emergency Med & Difficult Dis, Dept Emergency, 139 Middle Renmin Rd, Changsha 410011, Hunan, Peoples R China.
[Wang, Yueling] Cent South Univ, Xiangya Hosp, Dept Anesthesiol, 87 Xiangya Rd, Changsha 410008, Hunan, Peoples R China.
[Wei, Yan] First Hosp Guangyuan City, Dept Resp Med, 490 Juguo Rd, Guangyuan 628000, Sichuan, Peoples R China.
[Mu, Lin] Changzhi Med Coll, Peace Hosp, Dept Resp Med, Changzhi 046000, Shanxi, Peoples R China.