No abstract available
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Blood Specimen Collection*
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DNA / blood*
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Female
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Fetus* / cytology
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Humans
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Male
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Mothers*
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Pregnancy
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Pregnancy Trimester, Second
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Pregnancy Trimester, Third