1. Unit of Bone Marrow Transplantation, Division of Hematology Fondazione IRCCS Policlinico San Matteo Pavia Italy
2. Department of Biomedical Data Sciences Leiden University Medical Center Leiden The Netherlands
3. EBMT Leiden Study Unit Leiden The Netherlands
4. Department of Stem Cell Transplantation University Medical Center Hamburg‐Eppendorf Hamburg Germany
5. Department of Hematology and Stem Cell Transplantation West German Cancer Center, University Hospital of Essen Essen Germany
6. BMT Unit Saint‐Louis Hospital Paris France
7. Hematology Division University Hospital Basel Switzerland
8. Universitaetsklinikum Dresden Dresden Germany
9. Erasmus MC Cancer Institute Rotterdam The Netherlands
10. Beatson West of Scotland Cancer Centre Glasgow United Kingdom
11. University of Heidelberg Heidelberg Germany
12. Programme de Transplantation & Therapie Cellulaire Marseille France
13. CHU de Lille Lille France
14. Bone Marrow Transplant Unit, Department of Hematology Copenhagen University Hospital Copenhagen Denmark
15. Department of Medicine Medical Center‐University of Freiburg, Faculty of Medicine, University of Freiburg Freiburg Germany
16. CHU Nantes Nantes France
17. Department of Hematology and Bone Marrow Transplantation School of Medicine in Katowice, Medical University of Silesia Katowice Poland
18. BMT Unit, Internal Medicine I Medical University of Vienna Vienna Austria
19. Onco‐Hematology Division IEO, European Institute of Oncology IRCCS Milan Italy
20. Department of Molecular Medicine University of Pavia Pavia Italy
21. Unit of Blood Diseases and Stem Cell Transplantation, Department of Clinical and Experimental Sciences University of Brescia Brescia Italy
22. University Clinical Centre Medical University of Warsaw Warsaw Poland
23. Department of Haematology and Stem Cell Transplantation University College London Hospitals NHS Trust London UK
24. Hematology and Bone Marrow Transplantation Unit, Hematology Department Federico II University of Naples Naples Italy
25. Department of Hematology Maria Skłodowska‐Curie National Research Institute of Oncology Gliwice Poland
26. Department of Hematology Hospital Clínico Universitario Valencia Spain