title: Gram-negative pneumonia in hospitalized patients.
mesh_terms: D000328:Adult; D000368:Aged; D001442:Bacteroides Infections; D001441:Bacteroides fragilis; D003428:Cross Infection / Q000209:etiology*; D004927:Escherichia coli Infections; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000209:etiology*; D011552:Pseudomonas Infections; D011550:Pseudomonas aeruginosa; D011859:Radiography