No abstract available
MeSH terms
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Adult
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Environmental Exposure*
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Female
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Folic Acid / blood*
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Folic Acid Deficiency / etiology*
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Hematinics / blood*
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Humans
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Neural Tube Defects / etiology
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Nutrition Surveys
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Pregnancy
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Pregnancy Complications
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Public Health*
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Reproducibility of Results
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Smoking / adverse effects*
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Tobacco Smoke Pollution / adverse effects*
Substances
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Hematinics
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Tobacco Smoke Pollution
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Folic Acid