[1] Univ Roma Tor Vergata, S Giovanni Calibita Fatebenefratelli Hosp, Dept Syst Med, Endocrinol Diabet & Metab, Rome, Italy
[2] IRCCS GB Bietti Fdn, Ophthalmol, Rome, Italy
[3] Bambino Gesu Pediat Hosp, Diabet Unit, IRCCS, Rome, Italy
[4] MedStar Washington Hosp Ctr, MedStar Hlth Res Inst, Endocrinol, Washington, DC USA