No abstract available
Publication types
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Letter
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Research Support, N.I.H., Extramural
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Research Support, N.I.H., Intramural
MeSH terms
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Adult
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Age Distribution
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Causality
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Cohort Studies
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Emphysema / epidemiology*
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Female
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Humans
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Male
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Middle Aged
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Prospective Studies
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Risk
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Smoking / epidemiology*
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Young Adult