title: Exacerbation of respiratory symptoms in COPD patients may not be exacerbations of COPD.
authors.forename: Bianca
authors.initials: B
authors.lastname: Beghé
authors.forename: Alessia
authors.initials: A
authors.lastname: Verduri
authors.forename: Mihai
authors.initials: M
authors.lastname: Roca
authors.forename: Leonardo M
authors.initials: LM
authors.lastname: Fabbri
mesh_terms: D015897:Comorbidity; D006760:Hospitalization; D006801:Humans; D007249:Inflammation; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology*; D012140:Respiratory Tract Diseases / Q000150:complications / Q000175:diagnosis* / Q000473:pathology