1. School of Health Sciences, Universiti Sains Malaysia, Kelantan, 16150 Kubang Kerian, Malaysia
2. School of Dental Sciences, Universiti Sains Malaysia, Kelantan, 16150 Kubang Kerian, Malaysia
3. School of Medical Sciences, Universiti Sains Malaysia, Kelantan, 16150 Kubang Kerian, Malaysia