1. Faculty of Medicine, Universiti Sains Islam Malaysia, Jalan Pandan Utama, Pandan Indah, Kuala Lumpur, Malaysia
2. Department of Pharmacology, Faculty of Medicine, Pusat Perubatan Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur, Malaysia
3. School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia