1. Department of Otorhinolaryngology, Head and Neck Surgery, Aarhus University Hospital, Aarhus, Denmark
2. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
3. Department of Otorhinolaryngology, Head and Neck Surgery, Aalborg University Hospital, Aalborg, Denmark
4. Department of Pathology, Aarhus University Hospital, Aarhus, Denmark