[Tan, Yixi; Zuo, Jianhong; Lv, Xiu; Wen, Meiling; Zhang, Chuhong; Li, Sai; Yan, Hanxing; Hu, Tian; He, Sha] Univ South China, Affiliated Nanhua Hosp, Hengyang 421001, Hunan, Peoples R China.
[Zuo, Jianhong; Lv, Xiu] Univ South China, Sch Med, Hengyang 421001, Hunan, Peoples R China.
[Li, Jincheng] Shaoyang Univ, Med Sch, Shaoyang 422000, Hunan, Peoples R China.
[Lei, Mingsheng] Zhangjiajie City Hosp, Dept Resp & Crit Care Med, Zhangjiajie 427000, Hunan, Peoples R China.