title: Simple tests for assessment of obstructive airway disease.
mesh_terms: D002245:Carbon Dioxide / Q000097:blood; D006801:Humans; D006935:Hypercapnia / Q000175:diagnosis; D008722:Methods; D012140:Respiratory Tract Diseases / Q000175:diagnosis*; D013147:Spirometry; D013997:Time Factors
chemical_list: D002245:Carbon Dioxide