1. Department of Respiratory and Critical Care Medicine, Peking University People’s Hospital, Beijing, China
2. Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
3. Department of Pulmonary and Critical Care Medicine, Fujian Provincial Hospital, Fuzhou, China
4. Department of Respiratory, Critical Care and Sleep Medicine, Xiamen University Xiang’an Hospital, Xiamen, Fujian, China
5. Department of Pulmonary and Critical Care Medicine, Ningde Municipal Hospital of Ningde Normal University, Ningde, Fujian, China
6. Department of Respiratory and Critical Care Medicine, Beijing Jishuitan Hospital, Beijing, China
7. School of Public Health, Institute of Infectious Disease and Vaccine, Zhejiang Chinese Medical University, Hangzhou, China