No abstract available
MeSH terms
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Absenteeism
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Aged
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Air Pollution
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Bronchitis / prevention & control
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Employment
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Female
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Health Education
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Humans
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Lung Diseases, Obstructive / economics
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Lung Diseases, Obstructive / etiology
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Lung Diseases, Obstructive / prevention & control
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Lung Diseases, Obstructive / therapy*
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Male
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Middle Aged
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Respiratory Therapy
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Tobacco Use Disorder / complications