1. Palacios Institute of Women’s Health and Medicine, Madrid, Spain
2. Unit of Reproductive Medicine, Gynecological Endocrinology and Menopause, IRCCS S. Matteo Foundation, Pavia, Italy
3. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
4. Gynecology and Obstetrics Department, Hospital Universitario de Guadalajara, University of Alcalá, Guadalajara, Spain
5. Obstetrics and Gynecology Department, Hospital Universitari General de Catalunya, San Cugat, Spain
6. Department of Clinical and Experimental Medicine, University of Pisa, Italy