Down's syndrome and human behaviour.
D000022:Abortion, Spontaneous / Q000453:epidemiology; D002410:Catholicism; D003075:Coitus; D003267:Contraception; D004243:Divorce; D004314:Down Syndrome / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D005306:Fertilization; D006801:Humans; D007231:Infant, Newborn; D008423:Maternal Age; D011247:Pregnancy; D012725:Sexual Behavior