1. 1Department of Hematology and Oncology, Weill Cornell Medicine, Cornell University, New York-Presbyterian, New York, NY
2. 2Adult Bone Marrow Transplantation Service, Memorial Sloan Kettering Cancer Center, New York, NY
3. 3Department of Medicine, Weill Cornell Medicine, Cornell University, New York, NY
4. 4Hematology Department, Hôpital Saint-Antoine, Paris, France
5. 5Clinical Hematology and Cellular Therapy Department, Sorbonne University, Paris, France
6. 6INSERM UMR 938, Paris, France
7. 7European Society for Blood and Marrow Transplantation Statistical Unit, Hôpital Saint-Antoine, Paris, France
8. 8Hematology and Transplantation Unit, Hôpital Saint Louis, AP-HP, Paris, France
9. 9Department of Hematology, Oncology and Stem Cell Transplantation, Faculty of Medicine, University of Freiburg, Freiburg, Germany
10. 10Erasmus University Medical Center Cancer Institute, Rotterdam, the Netherlands
11. 11Centre for Clinical Haematology, University of Birmingham, Birmingham, United Kingdom
12. 12Department of Clinical Hematology and Stem Cell Transplant Unit, Turku University Hospital, Turku, Finland
13. 13Department of Clinical Hematology, Nantes University, Nantes, France
14. 14Wessex Blood and Marrow Transplant and Cellular Therapy Program, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
15. 15Department of Internal Medicine III, University Hospital of Ulm, Ulm, Germany
16. 16Oncology Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudia Arabia
17. 17Department of Hematology and Bone Marrow Transplantation, Hôpitaux de Brabois, Nancy, France
18. 18Hematology and Bone Marrow Transplantation Division, Chaim Sheba Medical Center, Tel Aviv University, Tel-Hashomer, Israel