1. Department of Oncology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark;
2. Department of Pathology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark;
3. Department of Oncology, Odense University Hospital, Odense, Denmark;
4. Department of Oncology, Aalborg University Hospital, Aalborg, Denmark