No abstract available
MeSH terms
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Adolescent
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Adult
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Altitude
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Anemia / epidemiology*
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Central America
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Child
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Child, Preschool
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Diet
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Female
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Folic Acid
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Hemoglobins / analysis*
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Hookworm Infections / epidemiology
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Humans
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Infant
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Iron
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Male
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Middle Aged
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Sex Factors
Substances
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Hemoglobins
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Folic Acid
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Iron