1. Institute of Clinical Medicine; Pathology and Forensic Medicine; University of Eastern Finland; Cancer Center of Eastern Finland; Kuopio Finland
2. Department of Clinical Pathology; Kuopio University Hospital; Kuopio Finland
3. University of Oulu and Department of Pathology; Oulu University Hospital; Oulu Finland
4. Department of Oncology and Radiotherapy; Oulu University Hospital and University of Oulu; Oulu Finland