No abstract available
MeSH terms
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Adult
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Carbon / poisoning*
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Dust
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Environmental Exposure
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Follow-Up Studies
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Forced Expiratory Volume
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Humans
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Lung / diagnostic imaging*
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Male
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Pneumoconiosis / diagnostic imaging
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Pneumoconiosis / etiology
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Radiography
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Respiration / drug effects*
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Vital Capacity / drug effects