University of Paris - Division of Pediatrics and Neonatal Critical Care, University of Paris - Division of Pediatrics and Neonatal Critical Care, University of Paris - Division of Pediatrics and Neonatal Critical Care, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico - Neonatal Intensive Care Unit, Polytechnic University of Milan, Catholic University of Milan, Catholic University of Milan, Catholic University of Milan, Pediatric Hospital Bambino Gesù and University of Paris - Division of Pediatrics and Neonatal Critical Care