Respiratory disability in coal miners.
D001784:Blood Gas Analysis; D003032:Coal Mining; D004185:Disability Evaluation; D004608:Eligibility Determination / Q000379:methods; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis*; D009784:Occupational Diseases / Q000175:diagnosis; D005082:Physical Exertion; D012129:Respiratory Function Tests; D012907:Smoking