[1] Univ Pavia, Dept Internal Med, Geriatr & Diabetol Unit, Pavia, Italy
[2] Univ Pavia ASP Pavia, Sch Geriatr, Pavia, Italy
[3] Univ Milan, Int Ctr T1D, Pediat Clin Res Ctr Romeo Enrica Invernizzi, DIBIC L Sacco, Milan, Italy
[4] ASST Fatebenefratelli Sacco, Div Endocrinol, Milan, Italy
[5] Harvard Med Sch, Boston Childrens Hosp, Div Nephrol, 300 Longwood Ave, Boston, MA 02115 USA