1. Endocrinology Unit, Medical Department, Endocrinology Unit, Azienda Usl Bologna Maggiore-Bellaria Hospital, Via Altura 3, 40139 Bologna, Italy
2. Endocrinology Unit, IRCCS, Humanitas Research Hospital, Rozzano, Via Manzoni 56, 20089 Milan, Italy
3. Department of Medical Sciences, Division of Endocrinology, Diabetology and Metabolism, University of Torino, Corso Dogliotti 14, 10126 Turin, Italy
4. Department of Medicine, Andrology and Reproductive Medicine Unit, University of Padova, Via Giustiniani 2, 35100 Padova, Italy
5. Sexual Medicine and Andrology Unit, Department of Experimental and Clinical Biomedical Sciences, Sexual Medicine and Andrology Unit, University of Florence, Largo Brambilla 3, 50134 Florence, Italy
6. Department of Systems Medicine, Tor Vergata University of Rome, Via Montpellier 1, 00166 Rome, Italy
7. Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, 00161 Rome, Italy
8. Department of Cardiothoracic and Respiratory Sciences, Endocrine Unit, Second University of Naples, Via Pansini 5, 80131 Naples, Italy
9. Department of Life, Health and Environmental Sciences, University of L'Aquila, Via Vetoio, 67100 L'Aquila, Italy