1. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
2. Research Center for Reproductive Medicine, Gynecological Endocrinology and Menopause, IRCCS S. Matteo Foundation, Pavia, Italy
3. Obstetrics and Gynecology Unit, IRCCS S. Matteo Foundation, Pavia, Italy