The effects of coal workers' pneumoconiosis on lung mechanics.
D000328:Adult; D003032:Coal Mining; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008176:Lung Volume Measurements; D008875:Middle Aged; D011009:Pneumoconiosis / Q000503:physiopathology*; D012129:Respiratory Function Tests; D012907:Smoking / Q000503:physiopathology