title: Intention-to-treat studies crucial for contraception research.
authors.affiliation: verkuyl@freeler.nl
authors.forename: Douwe Arie A
authors.initials: DA
authors.lastname: Verkuyl
mesh_terms: D003267:Contraception / Q000379:methods*; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D010342:Patient Acceptance of Health Care