1. Neonatal Intensive Care Unit, Azienda Ospedaliero Universitaria Policlinico “G. Rodolico-San Marco”, San Marco Hospital, University of Catania, 95121 Catania, Italy
2. Cardiovascular Department, Mediterranean Pediatric Cardiology Center, Bambino Gesù Children’s Hospital, 98035 Taormina, Italy
3. Pediatrics and Pediatric Emergency Operative Unit, Azienda Ospedaliero Universitaria Policlinico “G. Rodolico-San Marco”, San Marco Hospital, University of Catania, 95121 Catania, Italy
4. Postgraduate Training Program in Pediatrics, Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
5. Department of General Surgery and Medical Surgical Specialties, Section of Orthopaedics, A.O.U. Policlinico Rodolico-San Marco, University of Catania, 95123 Catania, Italy
6. Institute for Biomedical Research and Innovation (IRIB), National Research Council, 98164 Catania, Italy
7. Bioinformatics Unit, Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
8. Unit of Clinical Pediatrics, Department of Clinical and Experimental Medicine, AOU Policlinico “G. Rodolico-San Marco”, University of Catania, 95123 Catania, Italy
9. Unit of Infectious Disease, Department of Clinical and Experimental Medicine, AOU Garibaldi, University of Catania, 95123 Catania, Italy