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2.

Figure. A low-cost videolaryngoscope created from the direct laryngoscope and a low-cost smartphone borescope. device was easy to use, even by novices. Importantly, instead of connecting to a smartphone, the device should be joined with a tablet to provide a larger screen to facilitate visualization. Second, since the borescope has a cylindrical shape, it easily rotates, Video. The video shows a view from the low-cost videolaryngoscope during simulated intubation. Please see Supplementary File.