1. Endocrinology Unit 1, Maggiore-Bellaria Hospital, Medical Department, Azienda-Usl Bologna, Bologna, Italy
2. Sexual Medicine and Andrology Unit, Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
3. Sexual Medicine and Andrology Unit, Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy; Endocrinology, Andrology, and Medical Sexology, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy