1. Department of Oral and Maxillofacial Clinical Sciences; Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
2. Oral Cancer Research and Coordinating Centre; Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
3. Department of Oral and Maxillofacial Surgery; Hospital Tengku Ampuan Rahimah; Ministry of Health; Klang Selangor Malaysia