title: Pneumonia associated with nosocomial sinusitis: a different risk according to the pathogen involved.
authors.forename: F
authors.initials: F
authors.lastname: Bert
authors.forename: N
authors.initials: N
authors.lastname: Lambert-Zechovsky
mesh_terms: D003428:Cross Infection / Q000453:epidemiology / Q000382:microbiology*; D006801:Humans; D015523:Maxillary Sinusitis / Q000453:epidemiology / Q000382:microbiology*; D018410:Pneumonia, Bacterial / Q000453:epidemiology / Q000382:microbiology*; D012189:Retrospective Studies; D012307:Risk Factors