Institution: | 1.Department of Respiratory and Critical Care Medicine, People’s Hospital of Deyang City, Affiliated Hospital of Chengdu College of Medicine, No. 173 Taishan North Road, Deyang, 618000, Sichuan, China ;2.Department of Respiratory, Chengdu ShangjinNanfu Hospital, Chengdu, 610041, Sichuan, China ;3.Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China ; |