1. Section of Obstetrics and Gynecology, Research Center for Reproductive Medicine, Gynecological Endocrinology and Menopause, IRCCS S. Matteo Foundation, University of Pavia, Pavia, Italy;
2. Department of Obstetrics and Gynecology, University Magna Graecia', Catanzaro, Italy;
3. Section of Gynecology and Obstetrics, Department of Woman and Child Health, Careggi University Hospital, Florence, Italy;
4. Department of Obstetrics and Gynecology, Pisa University Hospital, Pisa, Italy;
5. Department of Medical Science, Institute for Maternal and Child Health – IRCCS “Burlo Garofolo”, University of Trieste, Trieste, Italy;
6. Obstetric and Gynecological Unit, Maggiore Hospital and University of Eastern Piedmont, Novara, Italy;
7. Department of Surgical Sciences, Institute of Gynecology and Obstetrics, City of Health and Science, University of Torino, Torino, Italy;
8. Department of Surgical Sciences, Institute of Gynecology and Obstetrics, University of Cagliari, Cagliari, Italy