title: Ventilator circuit changes.
authors.forename: L E
authors.initials: LE
authors.lastname: Asbel
authors.forename: C C
authors.initials: CC
authors.lastname: Johnson
mesh_terms: D003428:Cross Infection / Q000517:prevention & control*; D006801:Humans; D011014:Pneumonia / Q000517:prevention & control*; D012121:Respiration, Artificial / Q000295:instrumentation*