1. Section of Internal Medicine, Geriatrics, Endocrinology and Rare Diseases, Interdisciplinary Department of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy
2. Unit of Endocrinology, Diabetology, Dietetics and Clinical Nutrition, Sant Anna Hospital, 22020 San Fermo della Battaglia, Italy
3. Unit of Endocrinology, Clinical Diagnostic Center Morgagni, 95100 Catania, Italy
4. Geriatrics Unit, Department of Clinical & Experimental Medicine, University of Pisa, 56126 Pisa, Italy
5. Division of Endocrinology, Niguarda Hospital, 20162 Milan, Italy
6. Center of Nutrition for the Research and the Care of Obesity and Metabolic Diseases, National Institute of Gastroenterology IRCCS “Saverio de Bellis”, 70013 Castellana Grotte, Italy