1. Department of Molecular Medicine, Institute of Basic Medicine, University of Oslo, Oslo, Norway;
2. Centre for Evolution & Cancer, The Institute of Cancer Research, London, United Kingdom;
3. Section of Head and Neck Oncology, Department of Oncology, Oslo University Hospital, Oslo, Norway;
4. Department of Hematology and Oncology, Division of Pediatric and Adolescent Medicine, Oslo University Hospital, Oslo, Norway; and
5. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway