Government of the People's Republic of China - College of Respiratory and Critical Care Medicine, Tsinghua University - Beijing Tsinghua Changgung Hospital, Hubei University of Medicine - Department of Infectious Diseases, Government of the People's Republic of China - Third Medical Center, Zhengzhou University - Respiratory Intensive Care Unit, Xinxiang Medical University - First Affiliated Hospital, Zhengzhou University - Department of Respiratory and Critical Care Medicine, Xinxiang Central Hospital - Department of Pediatrics, Hubei University of Medicine - Department of Infectious Diseases, Nanjing Medical University - Department of Respiratory and Critical Care Medicine, Anhui Medical University, Vision Medicals Center for Infectious Diseases, Vision Medicals Center for Infectious Diseases, Tsinghua University - Beijing Tsinghua Changgung Hospital, Government of the People's Republic of China - College of Respiratory and Critical Care Medicine, Peking University - Department of Biochemistry and Biophysics, Zhengzhou University - Respiratory Intensive Care Unit, Government of the People's Republic of China - College of Respiratory and Critical Care Medicine and Yale University - Section of Pulmonary, Critical Care, and Sleep Medicine