No abstract available
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Educational Status
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Female
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Folic Acid / administration & dosage*
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Health Promotion / methods*
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Hematinics / administration & dosage*
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Humans
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Logistic Models
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Netherlands
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Neural Tube Defects / prevention & control
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Preconception Care / methods*
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Pregnancy
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Social Class
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Surveys and Questionnaires