title: Avoiding confusion in COPD: from risk factors to phenotypes to measures of disease characterisation.
authors.forename: A
authors.initials: A
authors.lastname: Agustí
authors.forename: B
authors.initials: B
authors.lastname: Celli
mesh_terms: D006801:Humans; D010641:Phenotype; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology* / Q000235:genetics*; D012307:Risk Factors; D009626:Terminology as Topic