1. Division of Hematology, University of Pavia, Fondazione Policlinico San Matteo, Istituti di Ricovero e Cura a Carattere Scientifico (IRCCS), Pavia;
2. Division of Hematology, Ospedale San Martino, Genova;
3. Division of Hematology, Ospedale San Giovanni Battista, Torino;
4. Department of Hematology, Fondazione IRCCS Ospedale Maggiore Policlinico, Mangiagalli e Regina Elena, Milano;
5. Hematology and Bone Marrow Transplantation Unit, San Raffaele Scientific Institute, Milano;
6. Division of Hematology, Department of Cellular Biotechnologies and Hematology, University La Sapienza, Roma;
7. Division of Hematology, Ospedali Riuniti, Bergamo;
8. Hemato-Oncology Transplant Unit, University Tor Vergata, Roma;
9. Department of Hematology, Ospedale Niguarda Ca' Granda, Milano;
10. Division of Hematology and Transplant Unit, Ospedale San Gerardo, University of Milano-Bicocca, Monza;
11. Division of Hematology and Bone Marrow Transplantation, University of Udine, Udine; and
12. Department of Hematology, University of Florence, Florence, Italy