No abstract available
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Female
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Humans
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Lung Diseases / epidemiology*
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Lung Diseases / etiology
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Male
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Pennsylvania
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Risk
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Sarcoidosis / epidemiology*
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Sarcoidosis / etiology
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Smoking
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Socioeconomic Factors
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Urban Population