The promiscuity pill principle (P-P-P).
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002584:Cervix Uteri / Q000473:pathology*; D003276:Contraceptives, Oral; D005260:Female; D006801:Humans; D012725:Sexual Behavior; D002577:Uterine Cervical Diseases / Q000473:pathology*
D003276:Contraceptives, Oral