title: Oral contraceptives and venous thromboembolism.
authors.forename: R
authors.initials: R
authors.lastname: Lawrenson
authors.forename: R
authors.initials: R
authors.lastname: Farmer
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D015982:Bias; D003280:Contraceptives, Oral, Synthetic / Q000009:adverse effects* / Q000145:classification; D005260:Female; D006801:Humans; D016017:Odds Ratio; D045167:Progesterone Congeners / Q000009:adverse effects* / Q000145:classification; D013923:Thromboembolism / Q000139:chemically induced*; D013924:Thrombophlebitis / Q000139:chemically induced*
chemical_list: D003280:Contraceptives, Oral, Synthetic; D045167:Progesterone Congeners