No abstract available
Publication types
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Clinical Trial
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Randomized Controlled Trial
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Review
MeSH terms
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Adult
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Age Factors
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Animals
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Cataract / epidemiology*
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Cataract / prevention & control*
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China / epidemiology
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Double-Blind Method
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Humans
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Middle Aged
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Minerals / therapeutic use*
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Nutritional Status
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Prevalence
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Vitamins / therapeutic use*