title: Chronic obstructive pulmonary disease phenotypes: current rather than future perspectives.
authors.forename: Dirkje S
authors.initials: DS
authors.lastname: Postma
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Sterk
mesh_terms: D003948:Diagnostic Techniques, Respiratory System; D019468:Disease Management; D006801:Humans; D029424:Pulmonary Disease, Chronic Obstructive