1. Profession Program, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
2. Department of Oral Medicine, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
3. Faculty of Dentistry, MAHSA University, Bandar Saujana Putra, Jenjarom, Selangor, Malaysia
4. Oral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Malaya, Malaysia
5. Bachelor Program, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia