1. Gynecologic Section, Department of Odontostomatological and Specialized Clinical Sciences, Università Politecnica delle Marche, Ancona, Italy
2. Department of Obstetrics and Gynecology, IRCCS Foundation Policlinico San Matteo, Pavia, Italy
3. Department of Clinical, Surgical, Diagnostic and Paediatric Sciences, University of Pavia, Pavia, Italy
4. Department of Medical Sciences, Obstetric and Gynecological Clinic, University of Ferrara, Ferrara, Italy
5. Department of Biomedical and Human Oncological Science, 2nd Unit of Obstetrics and Gynecology, University of Bari, Policlinico, Bari, Italy