[1] Univ Milan, Dept Med Sci & Community Hlth, Milan, Italy
[2] Fdn IRCCS Ca Granda, Unit Endocrinol, Osped Maggiore Policlin, Pad Zonda Via Sforza 35, I-20123 Milan, Italy
[3] Osped Riuniti Ancona, Div Endocrinol, Ancona, Italy
[4] Univ Turin, Dept Med Sci, Div Endocrinol Diabet & Metab, Turin, Italy
[5] Univ Perugia, Med Sch, Dept Med, Sect Endocrinol, Perugia, Italy
[6] Univ Padua, Dept Med DIMED, Internal Med 3, Padua, Italy
[7] Univ Ferrara, S Anna Univ Hosp Ferrara, Dept Med Sci, Sect Endocrinol & Internal Med, Ferrara, Italy
[8] Sandoz SPA, Origgio, MI, Italy
[9] HEXAL AG, Sandoz Biopharmaceut, Holzkirchen, Germany
[10] Univ Genoa, Ctr Excellence Biomed Res CEBR, Dept Internal Med & Med Specialties DiMI, IRCCS AOU San Martino IST, Genoa, Italy
[11] Univ Genoa, Ctr Excellence Biomed Res CEBR, Dept Internal Med & Med Specialties DiMI, IRCCS AOU San Martino IST, Genoa, Italy