1. Department of Pediatric Hematology/Oncology, Cell and Gene Therapy,
2. Laboratory of Transplantation Immuno-genetics,
3. Transfusion Unit, Department of Laboratories,
4. Academic Department of Pediatrics, Clinical Immunology and Vaccinology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy;
5. Laboratory of Immunology, IRCCS San Martino Hospital, Genoa, Italy;
6. Laboratory of Clinical and Experimental Immunology, Integrated Department of Services and Laboratories, IRCCS Giannina Gaslini Institute, Genoa, Italy;
7. Pediatric Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy; and
8. Sapienza, University of Rome, Rome, Italy