No abstract available
MeSH terms
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Autopsy
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China / epidemiology
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Congenital Abnormalities / epidemiology*
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Congenital Abnormalities / etiology
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Congenital Abnormalities / mortality
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Folic Acid / adverse effects
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Humans
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Infant, Newborn
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Survival Rate
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Ultrasonography, Prenatal / adverse effects