[1] Univ Med Ctr Rotterdam, Div Obstet & Prenatal Med, Dept Obstet & Gynecol, Rotterdam, Netherlands
[2] Univ Med Ctr Rotterdam, Dept Internal Med, Rotterdam, Netherlands
[3] Univ Med Ctr Rotterdam, Dept Clin Genet, Rotterdam, Netherlands
[4] Univ Med Ctr Rotterdam, Dept Epidemiol & Biostat, Rotterdam, Netherlands
[5] Haaglanden Med Ctr, Dept Obstet & Gynecol, The Hague, Netherlands
[6] Franciscus Hosp, Dept Obstet & Gynecol, Roosendaal, Netherlands
[7] Amphia Hosp, Dept Obstet & Gynecol, Breda, Netherlands