title: Helium-oxygen mixtures as adjunctive support for refractory viral croup.
mesh_terms: D003440:Croup / Q000628:therapy*; D006371:Helium / Q000008:administration & dosage* / Q000627:therapeutic use; D006801:Humans; D007223:Infant; D007827:Laryngitis / Q000628:therapy*; D010100:Oxygen / Q000008:administration & dosage*; D010102:Oxygen Inhalation Therapy
chemical_list: D006371:Helium; D010100:Oxygen