1. Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital Capital Medical University Beijing China
2. Beijing Institute of Infectious Diseases Beijing China
3. National Center for Infectious Diseases, Beijing Ditan Hospital Capital Medical University Beijing China
4. National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases Beijing China
5. Peking University Ditan Teaching Hospital Beijing China