title: Comparison of spirometry performed on the same subjects by two teams using similar instruments: an investigation of variability in prevalence of impairment.
mesh_terms: D001195:Asbestosis / Q000517:prevention & control; D006801:Humans; D009784:Occupational Diseases / Q000209:etiology / Q000517:prevention & control*; D012016:Reference Values; D013147:Spirometry