1. Department of Otorhinolaryngology ‐ Head and Neck SurgeryUniversity of Helsinki and HUS Helsinki University Hospital Helsinki Finland
2. Finnish Cancer Registry Helsinki Finland
3. Finnish Cancer RegistryInstitute for Statistical and Epidemiological Cancer and Research Helsinki Finland
4. Faculty of Social SciencesUniversity of Tampere Tampere Finland
5. Department of Public HealthSchool of Medicine, University of Helsinki Helsinki Finland
6. Cancer and Translational Medicine Unit, University of Oulu, Medical Research UnitOulu University Hospital Helsinki Finland
7. Oral and Maxillofacial DiseasesUniversity of Helsinki Helsinki Finland
8. Haartman InstituteUniversity of Helsinki Helsinki Finland
9. Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and TechnologyKarolinska Institutet and Karolinska Hospital Stockholm Sweden
10. Research Program in Systems Oncology, Faculty of MedicineUniversity of Helsinki Helsinki Finland