No abstract available
MeSH terms
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Adult
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Amniocentesis / statistics & numerical data*
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Amniocentesis / trends
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Cell-Free Nucleic Acids / blood*
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Chorionic Villi Sampling / statistics & numerical data*
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Chorionic Villi Sampling / trends
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Chromosome Disorders / diagnosis
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Female
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Genetic Testing / methods
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Humans
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Logistic Models
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Maternal Age*
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Middle Aged
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New York
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Pregnancy
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Retrospective Studies
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Ultrasonography, Prenatal