No abstract available
MeSH terms
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Age Factors
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Aged
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Breast Neoplasms / epidemiology*
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Breast Neoplasms / prevention & control*
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Calcium Compounds / administration & dosage*
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Carcinoma, Ductal, Breast / epidemiology
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Carcinoma, Ductal, Breast / prevention & control
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Dietary Supplements
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Drug Administration Schedule
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Female
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Humans
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Incidence
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Middle Aged
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Postmenopause
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Randomized Controlled Trials as Topic
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Research Design
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United States / epidemiology
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Vitamin D / administration & dosage
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Vitamin D / analogs & derivatives*
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Vitamin D / blood
Substances
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Calcium Compounds
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Vitamin D
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25-hydroxyvitamin D