1 Division of Oral Diagnostics and Surgical Sciences, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia.
2 Department of Pharmacology, Faculty of Medicine, Lincoln University College, Selangor Darul Ehsan, Malaysia. Electronic address: drsham.omr@gmail.com.
3 Division of Clinical Dentistry, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia.
4 Biochemistry Unit, Faculty of Medicine and Health Sciences, University Sultan Zainal Abidin Terengganu, Malaysia.
5 Department of Physiology, Faculty of Medicine, University Malaya Kuala Lumpur, Malaysia.