1 Neonatal Intensive Care Unit and Neonatal Accompaniment Unit, Azienda Ospedaliero-Universitaria Policlinico "Podolico-San Marco", San Marco Hospital, University of Catania, Catania, Italy. raffaelefalsaperla@hotmail.com.
2 Unit of Pediatrics and Pediatric Emergency, Azienda Ospedaliero-Universitaria Policlinico, "Rodolico-San Marco", San Marco Hospital, Catania, Italy. raffaelefalsaperla@hotmail.com.
3 Unit of Pediatrics and Pediatric Emergency, Azienda Ospedaliero-Universitaria Policlinico, "Rodolico-San Marco", San Marco Hospital, Catania, Italy.
4 Unit of Clinical Pediatrics, Department of Clinical and Experimental Medicine, University of Catania, AOU "Policlinico", PO "G. Rodolico", Via S. Sofia, 78, 95124, Catania, Italy.