1 Department of Family Medicine, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, 16150 Kubang Kerian, Kelantan, Malaysia
2 Fakulti Perubatan dan Sains Kesihatan, Universiti Sultan Zainal Abidin, Kampus Kota, Jalan Sultan Mahmud, 20400 Kuala Terengganu, Terengganu, Malaysia
3 Universiti Institut Teknologi Mara, 15200 Kota Bharu, Kelantan, Malaysia