[1] Palacios Inst Womans Hlth Antonio Acuna, Madrid 28009, Spain
[2] Istanbul Univ, Dept Obstet & Gynecol, Cerrahpasa Med Sch, TR-34365 Istanbul, Turkey
[3] Univ Pisa, Dept Obstet & Gynecol, I-56100 Pisa, Italy
[4] Univ Athens, Dept Obstet & Gynecol 2, Aretaieio Hosp, GR-11528 Athens, Greece
[5] Norwegian Univ Sci & Technol, Dept Lab Med Childrens & Womens Hlth, Fac Med, NO-7491 Trondheim, Norway
[6] Univ Trondheim Hosp, St Olavs Hosp, Dept Obstet & Gynecol, NO-7006 Trondheim, Norway
[7] Karolinska Inst, Dept Med, Cardiol Unit, SE-17176 Stockholm, Sweden
[8] Karolinska Inst, Head Ctr Gender Med, SE-17176 Stockholm, Sweden
[9] Karolinska Univ Hosp, SE-17176 Stockholm, Sweden
[10] Hop Paule de Viguier, Menopause & Metab Bone Dis Unit, F-31059 Toulouse 09, France
[11] Belgrade Sch Med, Clin Ctr Serbia, Inst Endocrinol, Beograd 11000, Serbia
[12] John Radcliffe Hosp, Womens Ctr, Oxford OX3 9DU, England
[13] Univ Libre Bruxelles, CHU St Pierre, Dept Obstet & Gynecol, B-1000 Brussels, Belgium