title: Helium flow-volume curves in the detection of early small airway disease.
mesh_terms: D000293:Adolescent; D000402:Airway Obstruction / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D002245:Carbon Dioxide / Q000097:blood; D002648:Child; D003550:Cystic Fibrosis / Q000150:complications* / Q000503:physiopathology; D005260:Female; D006371:Helium; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging / Q000503:physiopathology; D008297:Male; D010100:Oxygen / Q000097:blood; D010313:Partial Pressure; D011859:Radiography; D012119:Respiration; D012129:Respiratory Function Tests; D013147:Spirometry; D014797:Vital Capacity
chemical_list: D002245:Carbon Dioxide; D006371:Helium; D010100:Oxygen