1. Unit of Physiology, Universiti Sultan Zainal Abidin Fakulti Perubatan, Kuala Terengganu, Terengganu, Malaysia
2. Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
3. Department of Science Laboratory Technology, Akanu Ibiam Federal Polytechnic Unwana, Akanu ibiam federal polytechnic unwana, afikpo, Ebonyi, Nigeria
4. Department of Pathology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia