1 Department of Urology, Akershus University Hospital, Lørenskog, Norway; Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital-Radiumhospitalet, Oslo, Norway. Electronic address: axcrona@online.no.
2 Department of Urology, Oslo University Hospital-Radiumhospitalet, Oslo, Norway.
3 Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital-Radiumhospitalet, Oslo, Norway; Department of Pathology, Oslo University Hospital-Radiumhospitalet, Oslo, Norway.
4 Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital-Radiumhospitalet, Oslo, Norway; Department of Informatics, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway.