1. State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Biotechnology, Beijing, 100071, PR China
2. State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Millitary Medical Sciences, Beijing, 100071, PR China
3. College of Life Science, Hebei University, Baoding, 071002, PR China
4. School of Medicine, Tsinghua University, Beijing, 100084, PR China