No abstract available
MeSH terms
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Calcium, Dietary / administration & dosage*
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Calcium, Dietary / analysis
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Developing Countries
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Humans
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Milk, Human / chemistry
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Rickets / epidemiology*
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Rickets / etiology
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Risk Factors
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Sunlight
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Vitamin D / administration & dosage*
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Vitamin D / analysis
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Vitamin D Deficiency / complications
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Vitamin D Deficiency / epidemiology
Substances
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Calcium, Dietary
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Vitamin D