No abstract available
MeSH terms
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Activins
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Biomarkers
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Case-Control Studies
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Down Syndrome / diagnosis*
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Down Syndrome / prevention & control
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Female
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Genetic Testing / methods*
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Gestational Age
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Humans
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Inhibins / blood*
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Predictive Value of Tests
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Pregnancy
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Pregnancy Trimester, Second
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Sensitivity and Specificity
Substances
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Biomarkers
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Activins
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Inhibins