1. School of Life Sciences, Tianjin University, Tianjin, China
2. National Institute for Viral Disease Control and Prevention, CDC, Beijing, China
3. State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China
4. School of Environmental Science and Engineering, Tianjin University, Tianjin, China
5. Institute of Tianjin Key Laboratory of Function and Application of Biological Macromolecular Structures, Tianjin, China