Oral contraceptives and low antithrombin-3 activity.
D000991:Antithrombins / Q000097:blood*; D001780:Blood Coagulation Tests; D003276:Contraceptives, Oral; D004903:Erythrocyte Aggregation; D005260:Female; D006801:Humans; D008297:Male; D013923:Thromboembolism / Q000209:etiology
D000991:Antithrombins; D003276:Contraceptives, Oral