No abstract available
MeSH terms
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Amniocentesis
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Cesarean Section*
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Chromosome Deletion*
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Chromosomes, Human, Pair 13*
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Female
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Humans
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Placenta / diagnostic imaging
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Placenta Diseases* / blood
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Placenta Diseases* / diagnostic imaging
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Placenta Diseases* / surgery
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Pregnancy
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Stillbirth
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Ultrasonography, Prenatal
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Young Adult
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alpha-Fetoproteins / metabolism*