Cao Xiao-Jun, Lei Feng-Feng, Liu Hua, Luo Wan-Yin, Xiao Xiao-Hui, Li Yi, Lu Jun-Feng, Dong Zhi-Bao, Chen Qi-Zhang
Ningxia Medical University, Yinchuan, Ningxia 750000, China.
Department of Respiratory, Gansu Provincial Hospital, Lanzhou, Gansu 730000, China.
Chin Med J (Engl). 2018 Oct 20;131(20):2482-2485. doi: 10.4103/0366-6999.243571.