1 Division of Medical Oncology, Laboratory of Cellular Therapies, Department of Medical and Surgical Sciences for Children & Adults, University Hospital of Modena and Reggio Emilia, Modena, Italy; Technopole of Mirandola TPM, Mirandola, Modena, Italy. Electronic address: massimo.dominici@unimore.it.
2 Stem Cell Allotransplantation Section, Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA.