Mistakes with manufacturers' labelling.
D001778:Blood Coagulation Disorders / Q000139:chemically induced; D004348:Drug Labeling; D004997:Ethinyl Estradiol / Q000009:adverse effects; D005260:Female; D006801:Humans; D008875:Middle Aged; D014859:Warfarin / Q000009:adverse effects*
D004997:Ethinyl Estradiol; D014859:Warfarin