title: Oral contraception and platelet aggregation.
mesh_terms: D000244:Adenosine Diphosphate / Q000494:pharmacology; D001777:Blood Coagulation / Q000187:drug effects*; D001780:Blood Coagulation Tests; D001792:Blood Platelets / Q000187:drug effects*; D002715:Chlormadinone Acetate / Q000494:pharmacology; D003276:Contraceptives, Oral / Q000494:pharmacology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008656:Mestranol / Q000494:pharmacology; D009640:Norethindrone / Q000494:pharmacology
chemical_list: D003276:Contraceptives, Oral; D002715:Chlormadinone Acetate; D000244:Adenosine Diphosphate; D008656:Mestranol; D009640:Norethindrone