title: Coal workers' pneumoconiosis: medical research needs.
mesh_terms: D002908:Chronic Disease; D003032:Coal Mining; D006801:Humans; D008297:Male; D011009:Pneumoconiosis / Q000503:physiopathology*; D011656:Pulmonary Emphysema / Q000517:prevention & control; D011658:Pulmonary Fibrosis / Q000517:prevention & control; D012131:Respiratory Insufficiency / Q000517:prevention & control