No abstract available
MeSH terms
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Breast Neoplasms / chemically induced*
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Breast Neoplasms / epidemiology
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Estrogen Replacement Therapy / adverse effects*
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Estrogens / blood
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Estrogens / deficiency*
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Estrogens / therapeutic use
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Female
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Humans
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Middle Aged
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Postmenopause*
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Risk Factors
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Time Factors