1 Unit of Obstetrics and Gynecology, P.O. "Ospedale del Tigullio"-ASL4 (Barra, De Vito, Iasci, and Bogliolo), Genoa, Chiavari, Italy; Department of Health Sciences (DISSAL), University of Genoa (Barra), Genoa, Italy. Electronic address: [email protected].
2 Unit of Obstetrics and Gynecology, P.O. "Ospedale del Tigullio"-ASL4 (Barra, De Vito, Iasci, and Bogliolo), Genoa, Chiavari, Italy.