How birth control affects births.
D000028:Abortion, Induced; D000328:Adult; D001723:Birth Rate; D003267:Contraception; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D006801:Humans; D007231:Infant, Newborn; D008962:Models, Theoretical; D011247:Pregnancy; D011336:Probability