title: Combined estrogen-progestin oral contraceptives.
authors.forename: Ida
authors.initials: I
authors.lastname: Martinelli
authors.forename: Tullia
authors.initials: T
authors.lastname: Battaglioli
authors.forename: Pier Mannuccio
authors.initials: PM
authors.lastname: Mannucci
mesh_terms: D003277:Contraceptives, Oral, Combined / Q000009:adverse effects*; D005165:Factor V / Q000235:genetics*; D005260:Female; D006579:Heterozygote; D006801:Humans; D009154:Mutation; D016017:Odds Ratio; D013927:Thrombosis / Q000139:chemically induced*
chemical_list: D003277:Contraceptives, Oral, Combined; C095381:factor V Leiden; D005165:Factor V