[1] John Radcliffe Hosp, Womens Ctr, Oxford OX3 9DU, England
[2] Natl & Capodestrian Univ Athens, Dept Obstet & Gynecol 2, Athens, Greece
[3] Carol Davila Univ Med & Pharm, Dept Obstet & Gynecol, Bucharest, Romania
[4] Dr I Cantacuzino Hosp, Dept Obstet & Gynecol, Bucharest, Romania
[5] Univ Hosp, Breast Clin & Menopause Clin, B-9000 Ghent, Belgium
[6] Istanbul Univ, Cerrahpasa Med Sch, Dept Obstet & Gynecol, TR-34365 Istanbul, Turkey
[7] Univ Zaragoza, Fac Med, Hosp Clin, Dept Obstet & Gynecol, Zaragoza 50009, Spain
[8] Karolinska Inst, Head Ctr Gender Med, SE-17176 Stockholm, Sweden
[9] Karolinska Univ Hosp, SE-17176 Stockholm, Sweden
[10] Univ Med Ctr Utrecht, Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands
[11] Univ Pisa, Dept Clin & Expt Med, I-56100 Pisa, Italy
[12] Hop Paule Viguier, Menopause & Metab Bone Dis Unit, F-31059 Toulouse 09, France