1. Department of Stem Cell Transplantation, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
2. Fondazione Policlinico Universitario A. Gemelli Institute of Scientific Research and Treatment, Universita' Cattolica del Sacro Cuore, Rome, Italy
3. Hematology and Bone Marrow Transplantation Unit, Azienda Ospedaliera Papa Giovanni XXIII, Bergamo, Italy
4. Goethe University Hospital, Department of Medicine II, Hematology/Oncology, Frankfurt am Main, Germany
5. Division of Hematology, Basel University Hospital, Basel, Switzerland
6. Department of Hematology, Hospital Universitari i Politècnic La Fe, Valencia, Spain
7. Department of Hematology, L and A Seràgnoli, University of Bologna, S Orsola-Malpighi Hospital, Bologna, Italy
8. Amsterdam University Medical Center, Vrije Universiteit, Department of Hematology, Cancer Center Amsterdam, Amsterdam, the Netherlands
9. Turku University Hospital, Turku, Finland
10. Institute for Hematology and Blood Transfusion, Hospital Na Bulovce, Prague, Czech Republic
11. Hospital Clinico Universitario-INCLIVA Biomedical Research Institute, University of Valencia, Valencia, Spain