1. Department of Haematology, Transplantation and Internal Medicine Warszawa Medical University Warsaw Poland
2. Service d'Hématologie, Hôpital Saint‐Louis Assistance Publique des Hôpitaux de Paris (AP‐HP) and Université Paris 7 Paris France
3. St. James's Institute of Oncology Leeds Teaching Hospitals Leeds UK
4. Department of Medicine, Division of Hematology University of Patras Medical School Patras Greece
5. Department of Medicine A, Tel Aviv Sourasky (Ichilov) Medical Center and Sackler Medical Faculty Tel Aviv University Tel Aviv Israel
6. Department of Internal Medicine V (Haematology and Oncology) Innsbruck Medical University Innsbruck Austria
7. Department of Clinical Hematology Institute of Hematology & Blood Transfusion Praha Czech Republic
8. Department of Haematology Hospital Universitario y Politécnico La Fe & Scientific Director IIS La Fe Madrid Spain
9. Department of Medicine, Division of Hematology Karolinska Institutet Stockholm Sweden
10. Department of Hematology Radboud University Medical Center Nijmegen the Netherlands
11. Department of Hematology Oncology, Fondazione IRCCS Policlinico San Matteo University of Pavia Pavia Italy
12. Department of Haematology, Oncology and Clinical Immunology Universitätsklinik Düsseldorf Düsseldorf Germany
13. Department of Haematology Aarhus University Hospital Aarhus Denmark
14. Service d'Hématologie, Centre Hospitalier Universtaire Brabois Vandoeuvre Nancy France
15. Department of Haematology Aberdeen Royal Infirmary Aberdeen UK
16. Service d'Hématologie, Centre Hospitalier de Perpignan Perpignan France
17. Department of Hematology Democritus University of Thrace Medical School, University Hospital of Alexandroupolis Alexandroupolis Greece
18. Epidemiology and Cancer Statistics Group, Department of Health Sciences University of York York UK
19. Department of Tumor Immunology – Nijmegen Center for Molecular Life Sciences Radboud University Medical Center Nijmegen the Netherlands