1. Department of Respiratory and Critical Care Medicine Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine Shanghai 200025 China
2. Institute of Respiratory Diseases School of Medicine Shanghai Jiao Tong University Shanghai 200025 China
3. Shanghai Key Laboratory of Emergency Prevention Diagnosis and Treatment of Respiratory Infectious Diseases Shanghai 200025 China
4. Clinical Medicine Scientific and Technical Innovation Center Shanghai Tenth People's Hospital Tongji University School of Medicine Shanghai China
5. Department of Pulmonary and Critical Care Medicine Huadong Hospital Fudan University Shanghai China