title: Covert breathing system failure.
authors.forename: J
authors.initials: J
authors.lastname: Richardson
authors.forename: P J
authors.initials: PJ
authors.lastname: Bickford-Smith
mesh_terms: D000368:Aged; D004868:Equipment Failure; D005374:Filtration / Q000295:instrumentation*; D006801:Humans; D007385:Intermittent Positive-Pressure Ventilation / Q000295:instrumentation*; D008297:Male