Frequency of malformations in multiple late abortions.
D000022:Abortion, Spontaneous; D000013:Congenital Abnormalities / Q000453:epidemiology*; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D011272:Pregnancy, Multiple; D012737:Sex Factors; D014310:Triplets; D014427:Twins