No abstract available
Publication types
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Comparative Study
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Letter
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Research Support, Non-U.S. Gov't
MeSH terms
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Asthma / epidemiology*
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Asthma / etiology
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Birth Intervals
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Birth Order
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Child
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Cohort Studies
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Female
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Humans
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Male
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Odds Ratio
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Registries
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Risk Factors
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Siblings*
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Sweden / epidemiology