1. Department of Public Health Medicine, RCSI and UCD Malaysia Campus, Penang, 10450, Malaysia.
2. MBBS, AIMST University, Kedah, 08100, Malaysia.
3. Unit of Community Medicine, Faculty of Medicine, AIMST University, Kedah, 08100, Malaysia.
4. Unit of Pharmacology, Faculty of Medicine, AIMST University, Kedah, 08100, Malaysia.