title: The critical oestrogen content of combined oral contraceptives.
mesh_terms: D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003279:Contraceptives, Oral, Sequential; D004305:Dose-Response Relationship, Drug; D004341:Drug Evaluation; D045166:Estradiol Congeners / Q000008:administration & dosage / Q000009:adverse effects; D005260:Female; D006801:Humans; D006973:Hypertension / Q000139:chemically induced; D008234:Lynestrenol / Q000008:administration & dosage; D008599:Menstruation Disturbances / Q000139:chemically induced; D009644:Norgestrel / Q000008:administration & dosage; D011247:Pregnancy; D013924:Thrombophlebitis / Q000139:chemically induced
chemical_list: D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003279:Contraceptives, Oral, Sequential; D045166:Estradiol Congeners; D009644:Norgestrel; D008234:Lynestrenol