1. Department of Oral Medicine, School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
2. LIMES and Pharmaceutical Institute, University of Bonn, Bonn, Germany
3. Department of Periodontology, School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
4. Department of Oral and Maxillofacial Surgery, School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia