[1] Natl & Kapodistrian Univ Athens, Med Sch, Dept Obstet & Gynecol 2, Athens, Greece
[2] Univ Glasgow, Gynaecol & Med Educ, Glasgow, Lanark, Scotland
[3] Mayo Clin, Div Gen Internal Med, Ctr Womens Hlth, Jacksonville, FL USA
[4] Natl & Kapodistrian Univ Athens, Med Sch, Dept Obstet & Gynecol 3, Athens, Greece
[5] Imperial Coll, Queen Charlottes & Chelsea Hosp, London, England
[6] Imperial Coll, Chelsea & Westminster Hosp, London, England