title: The pneumonia conundrum.
authors.forename: P S
authors.initials: PS
authors.lastname: Barie
mesh_terms: D006801:Humans; D018410:Pneumonia, Bacterial / Q000209:etiology / Q000517:prevention & control*; D011183:Postoperative Complications / Q000209:etiology / Q000517:prevention & control*; D012122:Ventilators, Mechanical / Q000009:adverse effects