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Keyword
- Appalachian Kentucky1
- Central Appalachia1
- Coal mine dust lung disease1
- Coal mining[remove]1
- Coal workers' pneumoconiosis1
- Obstructive lung disease1
- Occupational exposure[remove]1
- Occupational medicine1
- Pulmonary massive fibrosis1
- Restrictive lung disease1
- Spirometry[remove]1