1. Stanley Ho Centre for Emerging Infectious Diseases, The Chinese University of Hong Kong, Hong Kong
2. Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore 138648, Singapore
3. Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
4. Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA