1. From the Diabetes Center (S.F., D.B., A.B., M.P., E.C., G.C., S.G.), Endocrinology, Department of Internal Medicine (G.M.), University “Tor Vergata,” Rome; and the Department of Clinical Pharmacology and Epidemiology (F.P.), Istituto di Ricerche Farmacologiche Mario Negri, Consorzio Mario Negri Sud, Chieti, Italy.