title: Checking the secondary oxygen supply.
authors.affiliation: Shrewsbury and Telford Hospital, Shrewsbury, UK. rob.angela@virgin.net.
authors.forename: R
authors.initials: R
authors.lastname: Law
authors.forename: N
authors.initials: N
authors.lastname: Watkinson
mesh_terms: D000776:Anesthesiology / Q000295:instrumentation*; D057189:Checklist; D006801:Humans