No abstract available
MeSH terms
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Chorionic Villi*
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Female
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Fetal Diseases / blood
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Fetal Diseases / etiology*
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Hemorrhage / blood
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Hemorrhage / etiology*
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Humans
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Pregnancy
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Pregnancy Complications, Hematologic / blood
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Pregnancy Complications, Hematologic / etiology*
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Prenatal Diagnosis / adverse effects*
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alpha-Fetoproteins / blood