title: Hospital-acquired pneumonia and de-escalation of antimicrobial treatment.
authors.forename: M H
authors.initials: MH
authors.lastname: Kollef
mesh_terms: D018929:Cell Culture Techniques / Q000379:methods; D003428:Cross Infection / Q000175:diagnosis / Q000188:drug therapy*; D004352:Drug Resistance, Microbial; D006801:Humans; D011014:Pneumonia / Q000175:diagnosis / Q000188:drug therapy*; D013997:Time Factors