title: Factor V Leiden carriers taking oral contraceptives have an increased risk of thrombosis.
authors: Justo
authors: J
authors: Aznar
authors: Germán
authors: G
authors: Cerdá
mesh_terms: D002318:Cardiovascular Diseases / Q000139:chemically induced*; D003277:Contraceptives, Oral, Combined / Q000009:adverse effects*; D003657:Decision Making; D005260:Female; D006801:Humans; D011247:Pregnancy
chemical_list: D003277:Contraceptives, Oral, Combined