1. Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Hospital Canselor Tuanku Muhriz, UKMMC, Kuala Lumpur, Malaysia
2. Department of Laboratory Diagnostic Services (JPMD), Hospital Canselor Tuanku Muhriz, UKMMC, Kuala Lumpur, Malaysia
3. Department of Medical Microbiology & Immunology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Hospital Canselor Tuanku Muhriz, UKMMC, Kuala Lumpur, Malaysia
4. Department of Community Health, Faculty of Medicine, Universiti Kebangsaan Malaysia, Hospital Canselor Tuanku Muhriz, UKMMC, Kuala Lumpur, Malaysia