title: A 52-year-old nonsmoker with a productive cough.
mesh_terms: D001249:Asthma / Q000150:complications* / Q000175:diagnosis; D003371:Cough / Q000209:etiology*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D013183:Sputum