1. Tampere University Faculty of Medicine and Health Technology Tampere Finland
2. Pathology, Fimlab Laboratories Tampere Finland
3. Pathology Unit, Central Hospital Bolzano Italy
4. Faculty of Medicine Aristotle University of Thessaloniki and Molecular Cytopathology Department Hippokration General Hospital Thessaloniki Greece
5. Department of Statistical Sciences University of Padova Padova Italy
6. Department of Pathology University Hospital Linköping Linköping Sweden
7. Synlab Pathology Lausanne Switzerland
8. South of Tyne Pathology Department, Queen Elizabeth Hospital Gateshead England
9. Imelda Hospital, Bonheiden Belgium
10. Department of Pathology and Cytology Karolinska University Laboratory Karolinska Hospital Huddinge Stockholm Sweden
11. University Hospital de Getafe Madrid Spain
12. Department of Pathology and Oncological Cytology Wroclaw Medical University Wroclaw Poland
13. University Basel Basel Switzerland
14. University Hospital Cattinara Trieste Italy
15. St. Elisabeth Cancer Institute Hospital Bratislava Slovak Republic
16. Faculty of Medicine, University of Ljubljana Institute of Pathology Ljubljana Slovenia
17. Erasmus MC University Medical Center Department of Pathology Rotterdam the Netherlands
18. Department of Pathology and Cytology, Clinical Hospital Centre Rijeka Rijeka Croatia
19. Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit University of Padova Padova Italy
20. Cochin Hospital University of Paris Paris France