Group of Reggio Emilia: Marina Palmieri (neonatal Unit), Flavio Vanacore (Obstetric Unit) from Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Lisa Melandri (Pediatric Unit) from Ospedale of Montecchio and Ospedale of Scandiano, Marcella Palmisano (Obstetric Unit) from Ospedale of Guastalla.