1 Division of Neonatology, Neonatal Intensive Care Unit, Careggi University Hospital of Florence, Largo Brambilla 3, Florence, Italy. [email protected].
2 Department of Pediatric Emergency Medicine and Trauma Center, Meyer University Children's Hospital, Florence, Italy.
3 Neonatal Intensive Care Unit, Azienda Ospedaliera Universitaria Integrata di Verona, Verona, Italy.
4 Department of Neurosciences, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy.