1. Department of Urology, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
2. Department of Urology, Turku University Hospital and University of Turku, Turku, Finland
3. Institute of Biomedicine, University of Turku, Turku, Finland
4. Department of Pathology, Turku University Hospital, Turku, Finland
5. Department of Surgery, Lohja Regional Hospital, Lohja, Finland
6. Department of Pathology (HUSLAB), Helsinki University Hospital and University of Helsinki, Helsinki, Finland and FIMM
7. Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK