title: The heterogeneity of chronic obstructive pulmonary disease.
authors.forename: J A
authors.initials: JA
authors.lastname: Wedzicha
mesh_terms: D005541:Forced Expiratory Volume / Q000502:physiology; D006304:Health Status; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D014057:Tomography, X-Ray Computed / Q000379:methods; D014797:Vital Capacity