No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
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Review
MeSH terms
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Birth Weight
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Embryonic and Fetal Development*
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Female
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Gestational Age
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Humans
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Infant, Premature
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Pregnancy
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Pregnancy, Multiple
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Triplets* / statistics & numerical data
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Twins* / statistics & numerical data
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United States