Affiliation: | a Department of Obstetrics & Gynecology, University “Magna Graecia” of Catanzaro, Catanzaro, Italy b Department of Obstetrics & Gynecology, University “Tor Vergata” of Rome, Rome, Italy c Department of Obstetrics & Gynecology, University “Federico II” of Naples, Naples, Italy d Department of Clinical and Experimental Medicine, University “Federico II” of Naples, Naples, Italy e Department of Obstetrics & Gynecology, University of Florence, Florence, Italy |