No abstract available
MeSH terms
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Acetylcholinesterase / chemistry
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Amniocentesis / standards*
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Evaluation Studies as Topic
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Female
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Genetic Testing / methods
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Genetic Testing / standards*
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Humans
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Karyotyping
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Male
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Pregnancy / blood*
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Pregnancy Outcome
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Sensitivity and Specificity
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South Carolina / epidemiology
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Spinal Dysraphism / diagnostic imaging
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Spinal Dysraphism / epidemiology*
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Spinal Dysraphism / genetics
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Ultrasonography
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alpha-Fetoproteins / chemistry*
Substances
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alpha-Fetoproteins
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Acetylcholinesterase