1. Department of Pediatric Hematology and Oncology, Istituto di Ricovero e Cura a Carattere Scientifico Bambino Gesù Children’s Hospital, Rome, Italy;
2. Department of Medical Sciences, Catholic University Medical School, Rome, Italy;
3. Department of Pediatrics, Sant’Orsola Hospital, University of Bologna, Bologna, Italy;
4. Istituto di Ricovero e Cura a Carattere Scientifico Azienda Ospedaliera Universitaria San Martino-Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy;
5. Istituto di Ricovero e Cura a Carattere Scientifico Giannina Gaslini, Genoa, Italy;
6. Children’s University Hospital, University of Tuebingen, Tuebingen, Germany;
7. Laboratory of Immunogenetics and Transplant Biology, Istituto Mediterraneo di Ematologia Foundation at Tor Vergata University Hospital, Rome, Italy;
8. University Department of Pediatrics, Istituto di Ricovero e Cura a Carattere Scientifico Bambino Gesù Children’s Hospital, University of Rome Tor Vergata, Rome, Italy;
9. Pediatric Hematology Oncology Division, Rafic Hariri University Hospital, Beirut, Lebanon;
10. Dipartimento di Medicina Sperimentale and Centro di Eccellenza per la Ricerca Biomedica, Università di Genova, Genoa, Italy; and
11. Department of Pediatrics, University of Pavia, Pavia, Italy