No abstract available
MeSH terms
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Anthracosis* / epidemiology
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Anthracosis* / prevention & control
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Coal Mining*
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Coal*
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Dust*
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Humans
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Occupational Diseases* / epidemiology
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Occupational Diseases* / prevention & control
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Occupational Exposure / adverse effects*
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Occupational Exposure / prevention & control
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Pneumoconiosis
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Population Surveillance