1. Oral Cancer Research & Coordinating Centre (OCRCC), Faculty of DentistryUniversity of Malaya Kuala Lumpur Malaysia
2. Faculty of DentistryMAHSA University Jenjarom Selangor Malaysia
3. Department of Community Oral Health & Clinical Prevention, Faculty of DentistryUniversity of Malaya Kuala Lumpur Malaysia
4. Department of Oro‐maxillofacial Surgical & Medical Sciences, Faculty of DentistryUniversity of Malaya Kuala Lumpur Malaysia
5. Pejabat Pergigian Kota Belud Kota Belud Sabah Malaysia
6. Faculty of DentistryUniversity Airlangga Surabaya Indonesia