1. Farid Aw Ghrayeb:
Department of Community Medicine, School of Medical Sciences, 1 Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
2. A. Mohamed Rusli:
Department of Community Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
3. Ayesha Al Rifai:
UNRWA, Ramallah, West-Bank, Palestine
4. I. Mohd Ismail:
Department of Community Medicine, School of Medical Sciences, 1 Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia