title: Thromboembolic disease in women on sequential contraceptives with unopposed ethinyl estradiol.
mesh_terms: D003276:Contraceptives, Oral / Q000009:adverse effects*; D004997:Ethinyl Estradiol / Q000008:administration & dosage / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011247:Pregnancy; D013923:Thromboembolism / Q000139:chemically induced* / Q000453:epidemiology; D013924:Thrombophlebitis / Q000139:chemically induced / Q000453:epidemiology
chemical_list: D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol