No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Abnormalities, Multiple / etiology
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Abnormalities, Multiple / genetics*
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Diseases in Twins*
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Female
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Heart Defects, Congenital / genetics*
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Humans
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Infant, Newborn
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Karyotyping
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Pregnancy
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Pregnancy, Multiple
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Twins
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Umbilical Arteries / abnormalities*