No abstract available
MeSH terms
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Chorionic Gonadotropin / blood*
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Dehydroepiandrosterone / analogs & derivatives
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Dehydroepiandrosterone / blood
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Dehydroepiandrosterone Sulfate
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Down Syndrome / diagnosis
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Estriol / blood
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Female
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Fetal Diseases / diagnosis
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Gonadal Steroid Hormones / blood*
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Humans
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Pregnancy / blood*
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Prenatal Diagnosis / methods
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Progesterone / blood
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Smoking / adverse effects*
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Smoking / blood
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alpha-Fetoproteins / analysis*
Substances
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Chorionic Gonadotropin
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Gonadal Steroid Hormones
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alpha-Fetoproteins
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Dehydroepiandrosterone
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Progesterone
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Dehydroepiandrosterone Sulfate
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Estriol