title: The authors reply.
authors.affiliation: Departments of Medicine, Anesthesiology, and Surgery, University of Massachusetts, Worcester, MA Department of Medicine, UMass Memorial Medical Center, University of Massachusetts Medical School, Worcester, MA.
authors.forename: Craig M
authors.initials: CM
authors.lastname: Lilly
authors.forename: Rahul N
authors.initials: RN
authors.lastname: Sood
mesh_terms: D005260:Female; D006801:Humans; D007362:Intensive Care Units / Q000706:statistics & numerical data*; D008297:Male; D053717:Pneumonia, Ventilator-Associated / Q000453:epidemiology*; D062486:Public Health Surveillance / Q000379:methods*