1. Department of Respiratory and Critical Care Medicine, West China Hospital Sichuan University Chengdu Sichuan China
2. Department of Infectional Inpatient Ward Two Chengdu Public Health Clinical Medical Center Chengdu Sichuan China
3. Department of Emergency Medicine, Emergency Medical Laboratory, West China Hospital Sichuan University Chengdu Sichuan China
4. Disaster Medical Center Sichuan University Chengdu Sichuan China