title: Flow reversal through the anaesthetic machine back bar: an unusual assembly fault.
authors.lastname: Cheng C J C
authors.forename: A R
authors.initials: AR
authors.lastname: Bailey
mesh_terms: D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D000773:Anesthesia, Obstetrical / Q000295:instrumentation; D002138:Calibration; D004867:Equipment Design; D004868:Equipment Failure; D005260:Female; D006801:Humans; D011247:Pregnancy