No abstract available
MeSH terms
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Abnormalities, Multiple / epidemiology
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Ductus Arteriosus, Patent / epidemiology
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Female
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Fetal Death
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Heart Defects, Congenital / diagnosis
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Heart Defects, Congenital / epidemiology*
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Heart Defects, Congenital / mortality
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Heart Septal Defects / epidemiology
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Humans
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Infant
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Infant Mortality
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Infant, Newborn
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Minnesota
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Pregnancy
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Rural Population
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Seasons
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Time Factors
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Transposition of Great Vessels / epidemiology
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Urban Population