1. Comparison of different methods of ventilation via cannula cricothyroidotomy in a trachea–lung model†  
N.J. Flint, W.C. Russell, J.P. Thompson 
British Journal of Anaesthesia 
Volume 103, Issue 6, Pages (December 2009)
DOI: /bja/aep264
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

2. Fig 1 The trachea–lung model.
British Journal of Anaesthesia  , DOI: ( /bja/aep264)
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
From left to right, ENK flow modulator, self-inflating bag, and three-way tap connections.
British Journal of Anaesthesia  , DOI: ( /bja/aep264)
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions