1. Department of Cancer Genetics, Institute for Cancer ResearchOslo University Hospital Oslo Norway
2. Institute of Clinical Medicine, Faculty of MedicineUniversity of Oslo Oslo Norway
3. Department of Surgical SciencesUppsala University Uppsala Sweden
4. Department of SurgeryUppsala Academic Hospital Uppsala Sweden
5. Department of Clinical Molecular Biology (EpiGen), Division of MedicineAkershus University Hospital Lørenskog Norway