1. Research and Development Department, Hygieia Innovation Sdn. Bhd, Lot 1G-2G, Komplex Lanai, No.2, Persiaran Seri Perdana, Persint 10, Territory of Putrajaya, 62250 Federal, Malaysia
2. Department of Conservative Dentistry, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
3. Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
4. Department of Oral Pathology, Oral Medicine and Periodontology, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
5. Department of Children's Dentistry and Orthodontics, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia