1 Department of Health Sciences, Anna Meyer Children's University Hospital, University of Florence, Florence, Italy.
2 Department of Dermatology, University of Pisa, Pisa, Italy.
3 Laboratory for Diseases of the Nervous System and Metabolism, Anna Meyer Children's University Hospital, Florence, Italy.
4 Neonatal Intensive Care Unit, Medical Surgical Feto-Neonatal Department, Anna Meyer Children's University Hospital, University of Florence, Florence, Italy.