title: Endometrial study with combined 17 alpha-hydroxy progesterone contraceptives.
mesh_terms: D000293:Adolescent; D000328:Adult; D002715:Chlormadinone Acetate / Q000494:pharmacology; D003276:Contraceptives, Oral / Q000494:pharmacology*; D004717:Endometrium / Q000166:cytology / Q000187:drug effects*; D004997:Ethinyl Estradiol / Q000494:pharmacology; D005260:Female; D006801:Humans; D008535:Megestrol / Q000494:pharmacology; D008656:Mestranol / Q000494:pharmacology; D010060:Ovulation; D013997:Time Factors
chemical_list: D003276:Contraceptives, Oral; D002715:Chlormadinone Acetate; D004997:Ethinyl Estradiol; D008656:Mestranol; D008535:Megestrol