1. Faculty of Dentistry, Oral Cancer Research and Coordinating Centre (OCRCC), University of Malaya, Kuala Lumpur, Malaysia;
2. Department of Oro-Maxillofacial Surgical and Medical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia;
3. Centre for Clinical and Diagnostic Oral Sciences, Institute of Dentistry, Barts and the London School of Dentistry, Queen Mary University of London, London, UK;
4. School of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan;
5. Faculty of Dentistry, MAHSA University, Bandar Saujana Putra, Malaysia;
6. Oral Health Division, Ministry of Health, Putrajaya, Malaysia;
7. Department of Community Oral Health and Clinical Prevention, Faculty of Dentistry, University of Malaya, Malaysia Kuala Lumpur, Malaysia;
8. Oral Cancer Research Team, Cancer Research Malaysia, Subang Jaya, Malaysia;
9. Clinical Oncology Unit, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia