1. Department of Clinical Laboratory, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, P.R. China
2. School of Biomedical Engineering, Capital Medical University, Beijing 100069, P.R. China
3. Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, P.R. China
4. Department of Research and Education, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, P.R. China