Choosing contraceptive steroids and doses.
D003276:Contraceptives, Oral / Q000008:administration & dosage*; D003280:Contraceptives, Oral, Synthetic / Q000008:administration & dosage* / Q000009:adverse effects / Q000138:chemical synthesis; D045166:Estradiol Congeners / Q000008:administration & dosage* / Q000009:adverse effects / Q000138:chemical synthesis; D005260:Female; D006801:Humans; D045167:Progesterone Congeners / Q000008:administration & dosage* / Q000009:adverse effects / Q000138:chemical synthesis; D013237:Stereoisomerism
D003276:Contraceptives, Oral; D003280:Contraceptives, Oral, Synthetic; D045166:Estradiol Congeners; D045167:Progesterone Congeners