1. Department of Medical Microbiology, University of Malaya, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
2. Department of Medicine, University of Malaya, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
3. School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia