title: Confounded thrombophilia studies in preeclampsia.
authors.forename: Johanna I
authors.initials: JI
authors.lastname: de Vries
authors.forename: Willem J
authors.initials: WJ
authors.lastname: Kist
authors.forename: William M
authors.initials: WM
authors.lastname: Hague
mesh_terms: D015986:Confounding Factors, Epidemiologic; D005260:Female; D006801:Humans; D011225:Pre-Eclampsia / Q000453:epidemiology / Q000209:etiology*; D011247:Pregnancy; D019851:Thrombophilia / Q000150:complications* / Q000453:epidemiology / Q000235:genetics