1. Department of Pathology; University of Debrecen; Debrecen Hungary
2. Institute of Pathology; University Hospital; Basel Switzerland
3. Department of Pathology; Radboud University Medical Centre; Nijmegen the Netherlands
4. Institute of Pathology; Charité-University Medicine Berlin; Campus Charité Mitte; Berlin Germany
5. Laboratory of Tumor Pathology and Molecular Diagnostics; Szeged Hungary