The formulation of oral contraceptives: does the amount of estrogen make any clinical difference?
D000568:Amenorrhea / Q000139:chemically induced; D002626:Chemistry, Pharmaceutical; D003276:Contraceptives, Oral / Q000009:adverse effects*; D003278:Contraceptives, Oral, Hormonal / Q000009:adverse effects*; D003327:Coronary Disease / Q000209:etiology; D004967:Estrogens / Q000009:adverse effects*; D005260:Female; D006801:Humans; D009203:Myocardial Infarction / Q000209:etiology; D011372:Progestins / Q000009:adverse effects; D012306:Risk; D012907:Smoking; D014592:Uterine Hemorrhage / Q000139:chemically induced
D003276:Contraceptives, Oral; D003278:Contraceptives, Oral, Hormonal; D004967:Estrogens; D011372:Progestins