[1] Univ Copenhagen Hosp, Reprod Biol Lab, Juliane Marie Ctr Women Children & Reprod, DK-2100 Copenhagen, Denmark
[2] Aarhus Univ Hosp, Dept Gynecol & Obstet, DK-8000 Aarhus, Denmark
[3] Univ So Denmark, Res Unit Gen Practice, Odense, Denmark
[4] Odense Univ Hosp, Dept Gynecol & Obstet, DK-5000 Odense, Denmark