title: Oral contraceptives and the risk of rheumatoid arthritis: the great transatlantic divide?
authors.affiliation: Department of Clinical Epidemiology, Leiden University Hospital, The Netherlands.
authors.forename: J P
authors.initials: JP
authors.lastname: Vandenbroucke
authors.forename: J M
authors.initials: JM
authors.lastname: Hazes
authors.forename: B A
authors.initials: BA
authors.lastname: Dijkmans
authors.forename: A
authors.initials: A
authors.lastname: Cats
mesh_terms: D001172:Arthritis, Rheumatoid / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D016001:Confidence Intervals; D003278:Contraceptives, Oral, Hormonal / Q000008:administration & dosage / Q000009:adverse effects*; D003627:Data Interpretation, Statistical; D005060:Europe / Q000453:epidemiology; D005260:Female; D006801:Humans; D015201:Meta-Analysis as Topic; D012307:Risk Factors; D014481:United States / Q000453:epidemiology
chemical_list: D003278:Contraceptives, Oral, Hormonal