Bruno Mandelli (Obstetric Unit), Melissa Bellini (Pediatric Unit), Luca Le Pera (Pediatric Unit) from the Ospedale of Piacenza; Maria Luisa Bidetti (Pediatric Unit), Giuseppe Crovini (Obstetric Unit) from Ospedale of Fidenza; Salvatore Anfuso (Obstetric Unit), Antonio Albarelli (Obstetric Unit) from Ospedale of Borgotaro.