to determine the effects of oral contraceptives on lipids and lipoproteins over a six-month period , we randomized 266 women into four oral contraceptive groups : ethinyl estradiol 35 micrograms plus ethynodiol diacetate 1 mg , ethinyl estradiol 30 micrograms plus levonorgestrel 0.15 mg , ethinyl estradiol 35 micrograms plus norethindrone 1 mg , and ethinyl estradiol 35 micrograms plus norethindrone 0.5 and 1 mg ( biphasic ) .
C0015011
ethinyl
C1260235
ethinyl estradiol