The teenage sexual revolution and the myth of an abstinent past.
D000022:Abortion, Spontaneous / Q000453:epidemiology; D000293:Adolescent; D000367:Age Factors; D001723:Birth Rate; D003267:Contraception; D005193:Family Planning Services; D005260:Female; D006801:Humans; D008393:Marriage; D008428:Maternal Mortality; D008572:Menarche; D011247:Pregnancy; D044469:Racial Groups; D012725:Sexual Behavior; D014481:United States