1. Institute of Molecular and Cell Biology, A*STAR (Agency for Science, Technology and Research), Singapore 138673
2. School of Life Sciences and Chemical Technology, Ngee Ann Polytechnic, Singapore 599489
3. Department of Biological Sciences, Faculty of Science, National University of Singapore, Singapore 117543
4. Molecular Virology Laboratory, Department of Medical Biosciences, University of the Western Cape, Cape Town 7535, South Africa
5. Department of Physiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Hong Kong
6. Department of Biochemistry, Yong Loo Lin School of Medicine, National University Health System (NUHS), National University of Singapore, Singapore 117597
7. Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597