1. Department of Hematology Oncology, Fondazione Istituto Di Ricovero e Cura a Carattere Scientifico Policlinico San Matteo, Pavia, Italy;
2. Department of Internal Medicine, University of Pavia, Pavia, Italy;
3. Department of Hematology, San Martino Hospital, Genova, Italy;
4. Department of Molecular Medicine, University of Pavia, Pavia, Italy;
5. Department of Hematology, San Giovanni Battista Hospital, Turin, Italy;
6. Hematology and Bone Marrow Transplant Unit, Department of Oncology, San Raffaele Scientific Institute, Milan, Italy;
7. Hematology and Bone Marrow Transplantation Center, Fondazione Istituto Di Ricovero e Cura a Carattere Scientifico Ospedale Maggiore Policlinico and University of Milan, Milan, Italy;
8. Division of Hematology and Bone Marrow Transplantation, Azienda Ospedaliera Universitaria Careggi, Florence, Italy;
9. Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy;
10. Rome Transplant Network, Department of Hematology, Stem Cell Transplant Unit, Policlinico Tor Vergata, Rome, Italy;
11. Department of Hematology Oncology, Ospedale Niguarda Ca' Granda, Milan, Italy;
12. Division of Hematology and Transplant Unit, Ospedale San Gerardo, Monza, Italy;
13. Hematology and Bone Marrow Transplantation Unit, Ospedale Oncologico di Riferimento Regionale Armando Businco, Cagliari, Italy; and
14. Hematology and Bone Marrow Transplant Units of Azienda Ospedaliera Papa Giovanni XXIII, Bergamo, Italy