No abstract available
MeSH terms
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Adult
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Amniocentesis / adverse effects
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Aneuploidy*
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Chorionic Villi Sampling / adverse effects
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Clinical Protocols
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Consensus
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DNA / blood
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Down Syndrome / diagnosis
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Female
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Fetal Blood / chemistry
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Gestational Age
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Humans
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Maternal Age
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Practice Guidelines as Topic
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Pregnancy
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Pregnancy Trimester, First
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Pregnancy Trimester, Second
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Prenatal Diagnosis / methods*
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Risk Factors
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Societies, Medical
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Ultrasonography, Prenatal