1 Department of Pathology, University of Helsinki and Helsinki University Hospital, HUS Diagnostiikkakeskus, HUSLAB Patologia, PL 720, 00029 HUS Topeliuksenkatu 32, Helsinki, Finland. matti.mauramo@helsinki.fi.
2 Department of Pathology, University of Helsinki and Helsinki University Hospital, HUS Diagnostiikkakeskus, HUSLAB Patologia, PL 720, 00029 HUS Topeliuksenkatu 32, Helsinki, Finland.
3 Department of Pathology, Charles University, Faculty of Medicine in Pilsen, Pilsen, Czech Republic.