About the Authors

Turid Omland

tuomland@ous-hf.no

Affiliations Department of Otorhinolaryngology/Head and Neck Surgery, Oslo University Hospital, Oslo, Norway, University of Oslo, Institute of Clinical Medicine, Oslo, Norway

Harriet Akre

Affiliations Department of Otorhinolaryngology/Head and Neck Surgery, Oslo University Hospital, Oslo, Norway, University of Oslo, Institute of Clinical Medicine, Oslo, Norway

Kathrine A. Lie

Affiliation Department of Pathology, Oslo University Hospital, Oslo, Norway

Peter Jebsen

Affiliation Department of Pathology, Oslo University Hospital, Oslo, Norway

Leiv Sandvik

Affiliations Department of Biostatistics, Oslo University Hospital, Oslo, Norway, University of Oslo, Faculty of Dentistry, Oslo, Norway

Kjell Brøndbo

Affiliations Department of Otorhinolaryngology/Head and Neck Surgery, Oslo University Hospital, Oslo, Norway, University of Oslo, Institute of Clinical Medicine, Oslo, Norway

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TO HA KAL KB. Performed the experiments: TO PJ. Analyzed the data: TO HA KAL PJ LS KB. Contributed reagents/materials/analysis tools: KAL PJ KB. Wrote the paper: TO HA KAL KB LS.