title: Low-dosage oral progestogens to control fertility. I. clinical investigation.
mesh_terms: D000293:Adolescent; D000328:Adult; D002582:Cervix Mucus / Q000187:drug effects; D002986:Clinical Trials as Topic; D003075:Coitus; D003276:Contraceptives, Oral / Q000008:administration & dosage* / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D004717:Endometrium / Q000187:drug effects; D005040:Ethynodiol Diacetate / Q000008:administration & dosage / Q000494:pharmacology; D005260:Female; D005640:Follicle Stimulating Hormone / Q000378:metabolism; D006801:Humans; D006914:Hydroxysteroids / Q000008:administration & dosage; D007664:Ketosteroids / Q000008:administration & dosage; D007986:Luteinizing Hormone / Q000378:metabolism; D008598:Menstruation / Q000187:drug effects; D009650:Norpregnanes / Q000008:administration & dosage / Q000494:pharmacology; D010053:Ovary / Q000187:drug effects; D011244:Pregnadienediols / Q000008:administration & dosage; D011276:Pregnanediol / Q000652:urine; D011281:Pregnatrienes / Q000008:administration & dosage; D011282:Pregnenediones / Q000008:administration & dosage; D011372:Progestins / Q000008:administration & dosage* / Q000009:adverse effects / Q000494:pharmacology; D013258:Steroids, Chlorinated / Q000008:administration & dosage; D013440:Sulfides / Q000008:administration & dosage; D014621:Vagina / Q000166:cytology / Q000187:drug effects
chemical_list: D003276:Contraceptives, Oral; D006914:Hydroxysteroids; D007664:Ketosteroids; D009650:Norpregnanes; D011244:Pregnadienediols; D011281:Pregnatrienes; D011282:Pregnenediones; D011372:Progestins; D013258:Steroids, Chlorinated; D013440:Sulfides; D005040:Ethynodiol Diacetate; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone; D011276:Pregnanediol