title: Analysis of the time factor in flow-volume curves of normal subjects and patients with chronic obstructive bronchitis.
mesh_terms: D000328:Adult; D001128:Argon; D001991:Bronchitis / Q000503:physiopathology*; D002908:Chronic Disease; D005260:Female; D005459:Fluorides; D006371:Helium; D006801:Humans; D008297:Male; D008875:Middle Aged; D010100:Oxygen; D012123:Pulmonary Ventilation; D012129:Respiratory Function Tests; D013147:Spirometry; D013455:Sulfur; D013997:Time Factors; D014797:Vital Capacity
chemical_list: D006371:Helium; D001128:Argon; D013455:Sulfur; D005459:Fluorides; D010100:Oxygen