1. Department of Oral and Craniofacial Sciences, University of Malaya, Kuala Lumpur, Malaysia
2. Department of Craniofacial Diagnostics and Biosciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
3. North Devon Healthcare NHS Trust, Barnstable, United Kingdom
4. Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
5. Department of Restorative Dentistry, University of Malaya, Kuala Lumpur, Malaysia
6. Department of Applied Sciences, University of the West of England, Bristol, United Kingdom
7. Oral Cancer Research and Coordinating Centre, University of Malaya, Kuala Lumpur, Malaysia