1. Institute of Hematology “L. e A. Seràgnoli,” University of Bologna, Bologna, Italy;
2. Hematology Unit, Città della Salute e della Scienza Hospital and University, Turin, Italy;
3. Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy;
4. Department of Hematology, Ospedale SS Antonio e Biagio Alessandria, Alessandria, Italy; and
5. Hematology and Bone Marrow Transplantation Unit, “A. Businco” Cancer Hospital, Azienda Ospedaliera Brotzu, Cagliari, Italy