title: [Rare lung diseases. Not everyone who wheezes has COPD].
authors.forename: Peter
authors.initials: P
authors.lastname: Stiefelhagen
mesh_terms: D000542:Alveolitis, Extrinsic Allergic / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005858:Germany; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis*; D035583:Rare Diseases; D012135:Respiratory Sounds / Q000209:etiology*