Congenital cardiac malformations in 109 sets of twins and triplets.
D000015:Abnormalities, Multiple / Q000235:genetics; D001724:Birth Weight; D004200:Diseases in Twins; D005260:Female; D006330:Heart Defects, Congenital / Q000453:epidemiology / Q000235:genetics*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008910:Minnesota; D011247:Pregnancy; D012737:Sex Factors; D014310:Triplets