title: A subtle cause of circle system failure.
authors.forename: G P
authors.initials: GP
authors.lastname: Findlay
authors.forename: M J
authors.initials: MJ
authors.lastname: Spittal
mesh_terms: D000328:Adult; D000776:Anesthesiology / Q000295:instrumentation*; D004867:Equipment Design; D004868:Equipment Failure; D006801:Humans; D008297:Male