No abstract available
MeSH terms
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Adult
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Alpha-Globulins / analysis
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Altitude
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Amniotic Fluid / analysis*
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Anencephaly / diagnosis*
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Congenital Abnormalities / etiology
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Female
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Fetal Diseases / diagnosis
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Fetal Proteins / analysis*
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Gestational Age
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Humans
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Pregnancy
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Prenatal Diagnosis*
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Ultrasonography
Substances
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Alpha-Globulins
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Fetal Proteins