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