title: [Many patients with erroneous COPD diagnosis for years].
authors.forename: Peter
authors.initials: P
authors.lastname: Stiefelhagen
mesh_terms: D002908:Chronic Disease; D003371:Cough / Q000209:etiology*; D003937:Diagnosis, Differential; D006801:Humans; D011237:Predictive Value of Tests; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis*; D000515:alpha 1-Antitrypsin / Q000097:blood; D019896:alpha 1-Antitrypsin Deficiency / Q000175:diagnosis*
chemical_list: D000515:alpha 1-Antitrypsin