Oral contraceptives and low antithrombin-3 activity.
D000991:Antithrombins / Q000032:analysis*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D013927:Thrombosis / Q000139:chemically induced
D000991:Antithrombins; D003276:Contraceptives, Oral