1. Key Laboratory of Medical Molecular Virology of MoE & MoH and Institutes of Biomedical Sciences Fudan University Shanghai China
2. Hebei Province Center for Disease Control and Prevention Shijiazhuang Hebei China
3. Zhengding County Center for Disease Control and Prevention Zhengding Hebei China
4. Eugene Applebaum College of Pharmacy and Health Sciences Wayne State University Detroit Michigan USA
5. Laboratory of Molecular Biology Training Center of Medical Experiments School of Basic Medical Sciences Fudan University Shanghai China
6. Children's Hospital Fudan University Shanghai China
7. Shanghai Institute of Infectious Disease and Biosecurity Fudan University Shanghai China