1. Hematology and Bone Marrow Transplant Unit, San Raffaele Scientific Institute, Milan, Italy;
2. Hématologie Clinique et Thérapie Cellulaire, Hôpital Saint-Antoine, Assistance Publique–Hôpitaux de Paris, Paris, France;
3. Universitè Pierre et Marie Curie, Paris, France;
4. Unité de Recherche Mixte en Santé (UMR_S) 938, INSERM, Paris, France;
5. Institute for Experimental Cellular Therapy, University Hospital Essen, Essen, Germany;
6. German National Bone Marrow Donor Registry, Ulm, Germany;
7. Hematology Division, Chaim Sheba Medical Center, Tel Hashomer, Israel;
8. Medizinische Klinik Und Poliklinik I, Universitätsklinikum Carl Gustav Carus Der Technische Universität Dresden, Dresden, Germany;
9. Division of Hematology, Catholic University of the Sacred Heart, Rome, Italy;
10. Bone Marrow Transplantation Department, Anadolu Medical Center Hospital, Kocaeli, Turkey;
11. Hematopoietic Stem Cell Transplantation Unit, Medical Park Hospital, Antalya, Turkey;
12. Stem Cell Transplant Unit, Fondazione Policlinico Tor Vergata, Tor Vergata University, Rome, Italy;
13. Dipartimento di Ematologia, Presidio Molinette, Universitá di Torino, Turin, Italy;
14. Department of Internal Medicine III, Hematopoietic Cell Transplantation, Grosshadern Clinic, University Hospital of Munich (Ludwig Maximilians University), Munich, Germany;
15. Programme de Transplantation et Thérapie Cellulaire, Centre de Recherche en Cancérologie de Marseille, Institut Paoli Calmettes, Marseille, France;
16. Hematology and Stem Transplantation Unit, Onco-Hematology Department, Bianchi Melacrino Morelli Hospital Agency, Reggio Calabria, Italy; and
17. Department of Bone Marrow Transplantation, University Hospital, Essen, Germany