title: In reply.
authors.forename: Wulf
authors.initials: W
authors.lastname: Pankow
authors.forename: Rainer
authors.initials: R
authors.lastname: Burkhardt
mesh_terms: D006801:Humans; D010808:Physical Examination / Q000379:methods*; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis* / Q000453:epidemiology*; D012129:Respiratory Function Tests / Q000379:methods*; D012907:Smoking / Q000453:epidemiology*; D014057:Tomography, X-Ray Computed / Q000379:methods*