title: Airway closure in children.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000402:Airway Obstruction / Q000503:physiopathology; D002648:Child; D006801:Humans; D008168:Lung / Q000502:physiology*; D008875:Middle Aged; D009584:Nitrogen / Q000032:analysis; D010100:Oxygen / Q000097:blood; D012119:Respiration; D013147:Spirometry
chemical_list: D009584:Nitrogen; D010100:Oxygen