title: [Significance of expiratory O2 and CO2 curves and simultaneous washout curves of He and SF6 in the diagnosis of small airway diseases].
mesh_terms: D000328:Adult; D001991:Bronchitis / Q000175:diagnosis*; D002245:Carbon Dioxide / Q000032:analysis*; D005459:Fluorides; D006371:Helium; D006801:Humans; D008875:Middle Aged; D010100:Oxygen / Q000032:analysis*; D011656:Pulmonary Emphysema / Q000175:diagnosis*; D013147:Spirometry; D013455:Sulfur
chemical_list: D002245:Carbon Dioxide; D006371:Helium; D013455:Sulfur; D005459:Fluorides; D010100:Oxygen