1 Department of Hematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico (IRCSS), Rome, Italy.
2 Unit of Clinical Psychology, Department of Neuroscience and Neurorehabilitation, Bambino Gesù Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico (IRCSS), Rome, Italy.