title: DoH seems to have underestimated incidence of venous thromboembolism in users of combined oral contraceptives.
authors.forename: R A
authors.initials: RA
authors.lastname: Lawrenson
authors.forename: A
authors.initials: A
authors.lastname: Whalley
authors.forename: E
authors.initials: E
authors.lastname: Simpson
authors.forename: R D
authors.initials: RD
authors.lastname: Farmer
mesh_terms: D003277:Contraceptives, Oral, Combined / Q000009:adverse effects*; D005260:Female; D006801:Humans; D015994:Incidence; D013923:Thromboembolism / Q000139:chemically induced*; D006113:United Kingdom / Q000453:epidemiology; D020246:Venous Thrombosis / Q000139:chemically induced*
chemical_list: D003277:Contraceptives, Oral, Combined