1. Department of Obstetrics and Gynecology, Hospital State of Republic of San Marino, San Marino, Republic of San Marino
2. Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
3. Department of Experimental and Clinical Medicine, Magna Graecia University, Catanzaro, Italy
4. Dipartimento Materno-Infantile, ARNAS Garibaldi-Nesima, Catania, Italy