[1] Univ Verona, Sect Endocrinol Diabet & Metab, Dept Med, Verona, Italy
[2] Azienda Osped Univ Integrata Verona, Verona, Italy
[3] Univ Hosp Rennes, Dept Endocrinol, INSERM, UMR 991, Rennes, France
[4] Univ Southampton, Nutr & Metab, Fac Med, Southampton, Hants, England
[5] Univ Hosp Southampton, Southampton Natl Inst Hlth Res, Southampton Gen Hosp, Biomed Res Ctr, Southampton, Hants, England