title: Microorganisms and exacerbation of chronic obstructive pulmonary diseases: pathophysiological mechanisms.
authors.affiliation: Department of Pharmacology, University of Copenhagen, Denmark.
authors.forename: P
authors.initials: P
authors.lastname: Clementsen
authors.forename: K S
authors.initials: KS
authors.lastname: Kristensen
authors.forename: S
authors.initials: S
authors.lastname: Norn
mesh_terms: D001424:Bacterial Infections; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000209:etiology* / Q000503:physiopathology*; D012141:Respiratory Tract Infections / Q000150:complications / Q000382:microbiology*; D014777:Virus Diseases