Randomized Controlled Trial
Cervical spine motion: a fluoroscopic comparison during intubation with lighted stylet, GlideScope, and Macintosh laryngoscope.
Anesth. Analg. 2005 Sep 1;101(3):910-5, table of contents.
Randomized Controlled Trial
ET-View compared to direct laryngoscopy in patients with immobilized cervical spine by unexperienced physicians: A randomized crossover manikin trial.
Anaesthesiol Intensive Ther. 2017 Jan 1; 49 (4): 274-282.
Randomized Controlled Trial
Randomized cross-over comparison of cervical-spine motion with the AirWay Scope or Macintosh laryngoscope with in-line stabilization: a video-fluoroscopic study.
Br J Anaesth. 2008 Oct 1;101(4):563-7.