1. Cancer and Translational Medicine Research Unit, Medical Research Center Oulu University of Oulu and Oulu University Hospital Oulu Finland
2. Department of Oral and Maxillofacial Diseases University of Helsinki Helsinki Finland
3. Department of Pathology University of Helsinki Helsinki Finland
4. Department of Oral Medicine and Diagnostic Sciences King Saud University College of Dentistry Riyadh Saudi Arabia
5. Department of Oral Diagnosis School of Dentistry, University of Campinas Piracicaba São Paulo Brazil
6. Graduate Program in Oral Biology School of Dentistry, University of Campinas Piracicaba São Paulo Brazil
7. Department of Otorhinolaryngology – Head and Neck Surgery University of Helsinki and HUS Helsinki University Hospital Helsinki Finland
8. Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and Technology Karolinska Institutet and Karolinska University Hospital Stockholm Sweden
9. Research Program in Systems Oncology, Faculty of Medicine University of Helsinki Helsinki Finland
10. Institute of Biomedicine, Pathology University of Turku Turku Finland
11. Turku University Central Hospital Turku Finland
12. Faculty of Dentistry Misurata University Misurata Libya