1. Division of Neonatology Careggi University Hospital of Florence Florence Italy
2. Neonatal Intensive Care Unit Azienda Ospedaliera Universitaria Integrata di Verona Verona Italy
3. Division of Neonatology and NICU Federico II University Hospital Naples Italy
4. Neonatal Intensive Care Unit, Department of Paediatrics, Hospital Germans Trias i Pujol Autonomous University of Barcelona Badalona Spain
5. Department of Neurosciences, Psychology, Drug Research and Child Health University of Florence Florence Italy