[1] Natl & Kapodistrian Univ Athens, Endocrine Unit, Athens, Greece
[2] Natl & Kapodistrian Univ Athens, Alexandra Hosp, Diabet Ctr, Sch Med, Athens, Greece
[3] Natl & Kapodistrian Univ Athens, Aretaieion Univ Hosp, Med Sch, Dept Obstet & Gynecol 2, Athens 11528, Greece
[4] John Radcliffe Hosp, Womens Ctr, Oxford OX3 9DU, England