title: The maximum expiratory flow response to helium as an index of small airway calibre [proceedings].
mesh_terms: D001980:Bronchi / Q000648:ultrastructure*; D005540:Forced Expiratory Flow Rates; D006371:Helium; D006801:Humans; D008448:Maximal Expiratory Flow Rate
chemical_list: D006371:Helium