1. Department of Paediatric Haematology/Oncology Cell and Gene Therapy Bambino Gesù Children's Hospital IRCCS Rome Italy
2. Department of Paediatric Haematology/Oncology Santobono Pausilipon Children's Hospital Naples Italy
3. Department of Pathology Bambino Gesù Children's Hospital, IRCCS Rome Italy
4. Department of Pediatrics, Sapienza University of Rome Rome Italy