1. Division of Neonatology, Careggi University Hospital of Florence, Florence, Italy
2. Division of Pediatric Immunology, Department of Pediatrics, Meyer Children’s University Hospital, Florence, Italy
3. Department of Health Sciences, Meyer University Hospital, University of Florence, Florence, Italy
4. Margherita Birth Center, Careggi University Hospital of Florence, Florence, Italy
5. Clinical Trials Coordinating Center, Careggi University Teaching Hospital of Florence, Florence, Italy
6. Department of Neurosciences, Psychology, Drug Research and Child Health, University of Florence, Italy Florence