title: Periodic examination of asbestos and coal miners.
mesh_terms: D000328:Adult; D000368:Aged; D001194:Asbestos / Q000009:adverse effects*; D001996:Bronchopneumonia / Q000453:epidemiology; D003032:Coal Mining; D006801:Humans; D008171:Lung Diseases / Q000453:epidemiology*; D008875:Middle Aged; D008906:Mining; D009784:Occupational Diseases / Q000453:epidemiology*; D011018:Pneumonia, Pneumococcal / Q000453:epidemiology; D013019:South Africa; D014397:Tuberculosis, Pulmonary / Q000453:epidemiology
chemical_list: D001194:Asbestos