1. Department of Community Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
2. Program of Nutrition and Dietetics, School of Health Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
3. Program of Environmental and Occupational Safety and Health, School of Health Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
4. Unit of Biostatistics and Research Methodology, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
5. Department of Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
6. Kelantan State Health Department, Ministry of Health Malaysia, Putrajaya, Malaysia.
7. Institute for Public Health, Ministry of Health Malaysia, Putrajaya, Malaysia.