1. UKM Medical Molecular Biology Institute, Universiti Kebangsaan Malaysia, Kuala Lumpur, 56000, Malaysia
2. Institute of Tropical Medicine, Nagasaki University, Nagasaki, 852-8523, Japan
3. Department of Medical Microbiology and Immunology, University Kebangsaan Malaysia Medical Centre, Kuala Lumpur, 56000, Malaysia
4. Kanagawa Prefectural Institute of Public Health, Kanagawa, 253-0087, Japan
5. National Institute of Infectious Diseases, Tokyo, 162-8640, Japan