[1] Univ Padua, Dept Med, Div Metab Dis, Padua, Italy
[2] Hosp Virgen Macarena Sevilla, Seville, Spain
[3] Hosp Vithas Sevilla, Seville, Spain
[4] Natl & Kapodistrian Univ Athens, Laiko Gen Hosp, Diabet Ctr, Med Sch,Dept Propaedeut Internal Med 1, Athens, Greece
[5] Univ G dAnnunzio, Dept Med & Aging Sci DMSI, Chieti, Italy
[6] Univ G dAnnunzio, Ctr Adv Studies & Technol CAST, Chieti, Italy