1. Clinical Pathways and Epidemiology Unit, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
2. Department of Epidemiology (DEP), Lazio Region—ASL Rome 1, Rome, Italy
3. Department of Surgery and Surgical Oncology Unit, Bambino Gesù Children’s Hospital, Rome, Italy
4. Health Management Department, Bambino Gesù Children’s Hospital, Rome, Italy
5. Department of Anesthesia and Intensive Care Medicine, Bambino Gesù Children’s Hospital, Rome, Italy
6. Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Bruxelles, Belgium
7. Emergency Department, Bambino Gesù Children’s Hospital, Rome, Italy