title: Spirometric measurements in an Egyptian portland cement factory.
mesh_terms: D000328:Adult; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases; D012129:Respiratory Function Tests; D012822:Silicon Dioxide; D012907:Smoking; D013147:Spirometry
chemical_list: D012822:Silicon Dioxide