1. Department of Otorhinolaryngology - Head and Neck Surgery, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
2. Department of Virology, University of Helsinki, Helsinki, Finland
3. Research Program in Systems Oncology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
4. Department of Pathology, University Hospital of Helsinki and Turku, Helsinki and Turku, Finland
5. Translational Cancer Medicine, Research Programs Unit, Faculty of Medicine, University of Helsinki, Helsinki, Finland
6. Department of Surgery, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
7. Department of Oral Pathology and Radiology, University of Turku, Turku, Finland