title: Reproducibility of maximum expiratory flow in severe chronic obstructive pulmonary disease.
mesh_terms: D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000503:physiopathology*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008297:Male; D008448:Maximal Expiratory Flow Rate; D008875:Middle Aged; D011656:Pulmonary Emphysema / Q000503:physiopathology*; D013997:Time Factors; D014797:Vital Capacity