1. Biomedical Quality Assurance Research Unit, Department of Public Health and Primary Care KU Leuven Leuven Belgium
2. Department of Pathology Radboud University Medical Center Nijmegen the Netherlands
3. Department of Pathology University Hospital Leuven Leuven Belgium
4. Diagnostic and Research Institute of Pathology Medical University of Graz Graz Austria
5. Department of Molecular Pathology, Laboratory Medicine Royal Infirmary of Edinburgh Edinburgh UK
6. Department of Pathology Herlev Hospital Copenhagen Denmark
7. Department of Pathology Technical University Munich Munich Germany
8. Department of Medical Sciences University of Turin and Pathology Unit TorinoItaly
9. FPO‐IRCCS Candiolo Cancer Institute Candiolo Italy
10. Department of Pathology, Research Programs Unit and HUSLAB University of Helsinki and Helsinki University Hospital Helsinki Finland
11. The Fingerland Department of Pathology Faculty of Medicine and University Hospital Hradec Kralove Czech Republic
12. Pathology Department Gustave Roussy Villejuif France