3Kaplan MB, I-Iagbery CA, Ward DS, et al. Comparison of direct and video-assisted views of the larynx during routine intubation. Clin Anesth, 2006,18 : 357-362.
4Low D, Healy D, Rasburn N. The use of the BERCI DCI video Laryngoscope for teaching novices direct laryngoscopy and tracheal intubation. Anaesthesia,2008,63 : 195 -201.