1. Division of Clinical Pathology/Cytology, Department of Laboratory Medicine; Karolinska Institutet, Karolinska University Hospital Huddinge; Huddinge Sweden
2. Department of Radiological, Oncological and Pathological Sciences; Sapienza University; Rome Italy
3. Rush University Medical College; Chicago Ill USA
4. Leiden Cytology and Pathology Laboratory; Lieveren The Netherlands
5. National Centre for Asbestos Related Disease, School of Medicine and Pharmacology; University of Western Australia, QEII Medical Centre; Perth W.A Australia
6. Department of Pathology; The Norwegian Radium Hospital, Oslo University Hospital; Oslo Norway
7. Department of Laboratory Medicine in Malmö; Lund University, Malmö University Hospital; Malmö Sweden
8. Department of Medicine; University of Padova; Padova Italy
9. Department of Anatomical Pathology; St Vincents Hospital; Sydney N.S.W Australia
10. Istanbul University; Istanbul Faculty of Medicine; Istanbul Turkey
11. Division of Pathology; Yamaguchi Grand Medical Center; Hofu
12. Cancer Education and Research Center, Osaka University Graduate School of Medicine; Osaka Japan
13. Case Western Reserve University/University Hospitals Case Medical Center; Department of Pathology; Cleveland Ohio USA
14. Hacettepe University; Faculty of Medicine, Department of Pathology; Ankara Turkey
15. Department of Tissue Pathology; PathWest Laboratory Medicine WA, QE2 Medical Centre; Perth W.A Australia
16. Department of Biopathology; Gustave Roussy Comprehensive Cancer Center; Villejuif France