1. Department of Obstetrics and Gynecology, Department of Reproductive and Development Sciences IRCCS 'Burlo Garofolo', University of Trieste Trieste Italy
2. Obstetrical and Gynecological Unit Hospital of Tolmezzo Tolmezzo Italy
3. Obstetrical and Gynecological Unit Hospital 'San Polo' Monfalcone Italy
4. Sanitary District 'ASS-1' Trieste Italy
5. University of Trieste Italy