"Missed pill" conception: fact or fiction?
D000328:Adult; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D005260:Female; D006801:Humans; D010060:Ovulation; D011247:Pregnancy; D013997:Time Factors
D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined