1. Department of Endocrinology and Metabolic Diseases, Ospedale Regina Apostolorum, Albano (Rome), Italy
2. Endocrinology and Metabolic Disease Unit, Azienda Ospedaliero-Universitaria "S. Maria della Misericordia", Udine, Italy
3. Division of Endocrinology, "V. Fazzi" Hospital, Lecce, Italy
4. Endocrine Unit, Arcispedale Santa Maria Nuova, Reggio Emilia, Italy
5. Interdisciplinary Department of Medicine, Section of Internal Medicine, Geriatrics, Endocrinology and Rare Diseases. University of Bari "A. Moro", Bari, Italy