1. University of Oulu, Oulu, Finland;
2. Cancer and Translational Medicine Research Unit, Medical Research Center Oulu, Oulu, Finland;
3. Department of Pathology, University of Oulu, Oulu, Finland;
4. Cancer Center, Department of Oncology, Kuopio University Hospital, Kuopio, Finland;
5. Department of Oncology, Tampere University Hospital, Tampere, Finland;
6. University of Eastern Finland, Kuopio, Finland;
7. Cancer Center, Department of Pathology and Forensic Medicine, Kuopio University Hospital, Kuopio, Finland;
8. Department of Pathology, Tampere University Hospital and Fimlab Laboratories, Tampere, Finland;
9. Department of Pathology, University of Helsinki, Helsinki, Finland;
10. Department of Pathology, Helsinki University Hospital, Helsinki, Finland;
11. Department of Oncology and Radiotherapy, Oulu University Hospital, Oulu, Finland