1. Department of Otorhinolaryngology–Head and Neck Surgery University of Helsinki and Helsinki University Hospital Helsinki Finland
2. Research Program in Systems Oncology Faculty of Medicine, University of Helsinki Helsinki Finland
3. Department of Bacteriology and Immunology Haartman Institute, University of Helsinki Helsinki Finland
4. Helsinki Ear Institute Helsinki Finland
5. Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and Technology Karolinska Institutet, Karolinska University Hospital Stockholm Sweden