1. Department of Clinical and Experimental Medicine, University of Catania, 95124 Catania, Italy
2. Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH 44125, USA
3. Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy
4. Research Center for Reproductive Medicine, Gynecological Endocrinology and Menopause, IRCCS San Matteo Foundation, 27100 Pavia, Italy