Affiliation: | (1) Neonatal Intensive Care Unit, Azienda Ospedaliera Senese, Viale Bracci 16, 53100 Siena, Italy;(2) Division of Paediatrics, Ospedale A. Perrino, Piazza Di Summa, 72100 Brindisi, Italy;(3) Clinical Physiology Institute, National Research Council of Italy, (IFC-CNR), Lecce Section, Italy; |