title: Innovation in pulmonary rehabilitation: experimenting with a hybrid.
authors.forename: Philip E
authors.initials: PE
authors.lastname: Alkana
mesh_terms: D000280:Administration, Inhalation; D005081:Exercise Therapy; D005740:Gases / Q000008:administration & dosage*; D006371:Helium / Q000008:administration & dosage*; D006801:Humans; D010100:Oxygen / Q000008:administration & dosage*; D011175:Positive-Pressure Respiration / Q000379:methods*; D029424:Pulmonary Disease, Chronic Obstructive / Q000534:rehabilitation*
chemical_list: D005740:Gases; D006371:Helium; C038949:heliox; D010100:Oxygen