title: Heliox redux.
authors.forename: Jonathan E
authors.initials: JE
authors.lastname: Kass
mesh_terms: D001249:Asthma / Q000188:drug therapy*; D006371:Helium / Q000627:therapeutic use*; D006801:Humans; D010100:Oxygen / Q000627:therapeutic use*; D018579:Patient Selection; D012138:Respiratory Therapy / Q000379:methods*
chemical_list: D006371:Helium; C038949:heliox; D010100:Oxygen