1. Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
2. Temasek Lifesciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
3. Department of Microbiology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
4. Centre of Excellence for Research in AIDS (CERiA), Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia