No abstract available
MeSH terms
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Biomarkers / analysis
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Chorionic Gonadotropin / analysis
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Chromosomes, Human, Pair 18*
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Estriol / analysis
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False Positive Reactions
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Female
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Humans
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Pregnancy
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Prenatal Diagnosis / statistics & numerical data*
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Trisomy*
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alpha-Fetoproteins / analysis
Substances
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Biomarkers
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Chorionic Gonadotropin
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alpha-Fetoproteins
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Estriol