1. Randomized controlled trial of the A. P
Randomized controlled trial of the A.P. Advance, McGrath, and Macintosh laryngoscopes in normal and difficult intubation scenarios: a manikin study 
E. Burdett, D.J. Ross-Anderson, J. Makepeace, P.A. Bassett, S.G. Clarke, V. Mitchell 
British Journal of Anaesthesia 
Volume 107, Issue 6, Pages (December 2011)
DOI: /bja/aer295
Copyright © 2011 The Author(s) Terms and Conditions

2. Fig 1
(a) The McGrath videolaryngoscope (with permission, Aircraft Medical, UK) and (b) the APA videolaryngoscope with DAB (with permission, Intavent Direct, UK).
British Journal of Anaesthesia  , DOI: ( /bja/aer295)
Copyright © 2011 The Author(s) Terms and Conditions

3. Fig 2
Graphical representations of percentage of manikins in each scenario whose tracheas are not yet successfully intubated. (a) Easy scenario. (b) Difficult scenario.
British Journal of Anaesthesia  , DOI: ( /bja/aer295)
Copyright © 2011 The Author(s) Terms and Conditions

4. Fig 3
Anaesthetist preference for the laryngoscope they would choose for safest and quickest intubation if faced with the same scenario again.
British Journal of Anaesthesia  , DOI: ( /bja/aer295)
Copyright © 2011 The Author(s) Terms and Conditions