title: A study of lung function in coalworkers' pneumoconiosis.
mesh_terms: D000328:Adult; D002681:China; D003032:Coal Mining; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008297:Male; D008449:Maximal Expiratory Flow-Volume Curves; D008875:Middle Aged; D011009:Pneumoconiosis / Q000503:physiopathology*