No abstract available
MeSH terms
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Biomarkers / analysis
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Chorionic Gonadotropin / analysis
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Chorionic Gonadotropin, beta Subunit, Human / analysis*
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Data Interpretation, Statistical
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Female
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Humans
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Models, Statistical*
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Nuchal Translucency Measurement / standards*
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Pregnancy
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Pregnancy-Associated Plasma Protein-A / analysis*
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Prenatal Diagnosis / methods
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Prenatal Diagnosis / standards
Substances
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Biomarkers
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Chorionic Gonadotropin
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Chorionic Gonadotropin, beta Subunit, Human
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Pregnancy-Associated Plasma Protein-A