'Escape' ovulation in women due to the missing of low dose combination oral contraceptive pills.
D000293:Adolescent; D000328:Adult; D002582:Cervix Mucus / Q000187:drug effects; D003276:Contraceptives, Oral / Q000494:pharmacology*; D003277:Contraceptives, Oral, Combined / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004717:Endometrium / Q000187:drug effects; D004997:Ethinyl Estradiol; D005260:Female; D006801:Humans; D009640:Norethindrone / Q000494:pharmacology; D010060:Ovulation / Q000187:drug effects*
D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D004997:Ethinyl Estradiol; D009640:Norethindrone