1. Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
2. Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen 518000, China
3. School of Life Sciences, Tsinghua University, Beijing 100084, China
4. Institute of Pathogenic Organisms, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China