1. Department of Periodontology & Community Dentistry, Faculty of Dentistry, Universiti Sains Islam Malaysia, Kuala Lumpur, Malaysia
2. Department of Oral & Maxillofacial Surgery, Pathology and Medicine, Faculty of Dentistry, Universiti Sains Islam Malaysia, Kuala Lumpur, Malaysia
3. Klinik Pergigian Hospital Pasir Mas, Kelantan, Malaysia
4. Klinik Pergigian Lahad Datu, Sabah, Malaysia