1. Division of Paediatric Haematology-Oncology, University Hospital of Bari
2. Department of Organ Transplantation and Emergency, Thoracic Surgery Unit, University Hospital of Bari
3. Department of Emergencies and Organ Transplantation, Pediatric Surgery, University of Bari
4. Department of Emergency and Organ Transplantation, Plastic and Reconstructive Surgery and Burns Unit, University of Bari “Aldo Moro,” Bari
5. Department of Laboratories, Pathology Unit, Bambino Gesu Children’s Hospital, IRCCS, Rome, Italy