Development of the ratio of levonorgestrel, 0.15 mg, to ethinyl estradiol, 0.03 mg.
D001835:Body Weight / Q000187:drug effects; D002318:Cardiovascular Diseases / Q000139:chemically induced; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage* / Q000009:adverse effects; D003280:Contraceptives, Oral, Synthetic / Q000008:administration & dosage* / Q000009:adverse effects; D004997:Ethinyl Estradiol / Q000008:administration & dosage* / Q000009:adverse effects; D005260:Female; D006801:Humans; D016912:Levonorgestrel; D009644:Norgestrel / Q000008:administration & dosage* / Q000009:adverse effects; D013237:Stereoisomerism
D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003280:Contraceptives, Oral, Synthetic; D009644:Norgestrel; D004997:Ethinyl Estradiol; D016912:Levonorgestrel