Once-a-month oral contraceptive: quinestrol and quingestanol.
D000328:Adult; D001706:Biopsy; D003276:Contraceptives, Oral / Q000008:administration & dosage* / Q000009:adverse effects; D004717:Endometrium / Q000166:cytology; D004997:Ethinyl Estradiol / Q000008:administration & dosage; D005260:Female; D006801:Humans; D008598:Menstruation / Q000187:drug effects; D009640:Norethindrone / Q000008:administration & dosage; D010060:Ovulation / Q000187:drug effects; D010507:Periodicity; D013997:Time Factors
D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol; D009640:Norethindrone