No abstract available
Publication types
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Letter
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Breast Neoplasms / epidemiology
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Breast Neoplasms / etiology*
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Case-Control Studies
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Female
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Gestational Age
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Humans
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Infant, Newborn
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Infant, Premature*
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Labor, Obstetric
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Parity
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Pregnancy
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Registries
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Risk Factors
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Sweden / epidemiology