Reference:
D. Demirel, K. L. Butler, Tansel Halic, G. Sankaranarayanan, D. Spindler, C. Cao, E. Petrusa, M. Molina, D. Jones, S. De (2015). A Hierarchical Task Analysis of Cricothyroidotomy Procedure for a Virtual Airway Skills Trainer (VAST) Simulator.
The American Journal of Surgery, 2015.