title: Unexpected difficult intubation with Portex tracheal tube introducer.
authors.forename: J W
authors.initials: JW
authors.lastname: Zwall
authors.forename: S
authors.initials: S
authors.lastname: Gupta
mesh_terms: D004209:Disposable Equipment; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation*; D020315:Latex Hypersensitivity / Q000517:prevention & control; D008153:Lubrication