title: Is that case of asthma really COPD, and does the diagnosis matter?
authors: Allen L
authors: AL
authors: Lefkovitz
authors: Barbara J
authors: BJ
authors: Zarowitz
mesh_terms: D001249:Asthma / Q000175:diagnosis* / Q000453:epidemiology; D003937:Diagnosis, Differential; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis* / Q000453:epidemiology; D014481:United States / Q000453:epidemiology