title: Relationship of maximal expiratory air flow to volume and time in patients with chronic obstructive bronchitis.
mesh_terms: D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000150:complications / Q000503:physiopathology*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000150:complications; D012123:Pulmonary Ventilation; D012129:Respiratory Function Tests; D013147:Spirometry; D013997:Time Factors