No abstract available
MeSH terms
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Anemia / diagnosis
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Canada / epidemiology
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Cardiovascular Diseases / prevention & control
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Dietary Supplements*
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Female
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Folic Acid / administration & dosage*
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Folic Acid / blood
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Food, Fortified
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Humans
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Neural Tube Defects / epidemiology
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Neural Tube Defects / prevention & control*
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Pregnancy / blood
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United States / epidemiology
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Vitamin B 12 Deficiency / diagnosis