Prenatal mortality in Iowa, 1963.
D000022:Abortion, Spontaneous / Q000453:epidemiology*; D000328:Adult; D000013:Congenital Abnormalities / Q000453:epidemiology; D005260:Female; D005313:Fetal Death / Q000453:epidemiology*; D005865:Gestational Age; D006801:Humans; D007484:Iowa; D008423:Maternal Age; D011247:Pregnancy