1 Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore, Singapore. ng_lai_guan@immunol.a-star.edu.sg.
2 Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore. ng_lai_guan@immunol.a-star.edu.sg.
3 National Skin Centre, Singapore, Singapore. ng_lai_guan@immunol.a-star.edu.sg.