No abstract available
MeSH terms
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Adult
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Age Factors
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Aged
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Airway Obstruction / complications*
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Airway Obstruction / diagnosis
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Coal Mining*
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Disability Evaluation*
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Eligibility Determination
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Environmental Exposure
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Humans
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Life Expectancy*
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Male
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Middle Aged
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Mortality*
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Occupational Diseases / complications*
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Pennsylvania
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Pneumoconiosis / complications*
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Pneumoconiosis / diagnostic imaging
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Radiography
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Spirometry
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Workers' Compensation