1. Instituto di Ricovero e Cura a Carattere Scientifico Casa Sollievo della Sofferenza, Mendel Laboratory (S.P., V.T.) I-71013 San Giovanni Rotondo, Italy;
2. Department of Medical and Surgical Sciences (G.S., F.A.), University Magna Graecia of Catanzaro, I-88100 Catanzaro, Italy;
3. Departments of Biomedical Sciences (A.P.) and Medicine and Aging Sciences (A.C.), University G. d‘Annunzio, Aging Research Center, Center of Excellence for Aging, G. d‘Annunzio University Foundation, I-66013 Chieti-Pescara, Italy;
4. Department of Experimental Medicine (V.T.), Sapienza University, I-00185 Rome, Italy
5. Research Unit of Diabetes and Endocrine Diseases (V.T.), I-71013 San Giovanni Rotondo, Italy;