No abstract available
Publication types
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Comment
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Comparative Study
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Letter
MeSH terms
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Adult
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Breast Neoplasms / chemically induced*
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Breast Neoplasms / epidemiology*
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Breast Neoplasms / pathology
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Dose-Response Relationship, Drug
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Female
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Finland
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Follow-Up Studies
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Humans
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Incidence
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Intrauterine Devices, Medicated / adverse effects*
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Levonorgestrel / adverse effects*
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Levonorgestrel / pharmacology
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Middle Aged
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Risk Assessment