title: Validation of registries: a neglected, but indispensable investment.
authors.affiliation: Department of Obstetrics and Gynecology, Holbaek Hospital, University of Copenhagen, Holbaek, Denmark.
authors.forename: Lone
authors.initials: L
authors.lastname: Krebs
authors.forename: Jens
authors.initials: J
authors.lastname: Langhoff-Roos
mesh_terms: D005260:Female; D006801:Humans; D011225:Pre-Eclampsia / Q000175:diagnosis*; D011247:Pregnancy; D012042:Registries