title: Microbial etiology of acute pneumonia in hospitalized patients.
authors.forename: D J
authors.initials: DJ
authors.lastname: Barnes
mesh_terms: D000208:Acute Disease; D000328:Adult; D003428:Cross Infection / Q000209:etiology / Q000382:microbiology*; D006090:Gram-Negative Bacteria / Q000302:isolation & purification; D006801:Humans; D011014:Pneumonia / Q000209:etiology / Q000382:microbiology*; D013183:Sputum / Q000382:microbiology