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. 2015 Apr 29;19(1):198. doi: 10.1186/s13054-015-0924-7

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© Rajajee et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Confirmation of guidewire position (longitudinal). Longitudinal view of the trachea following guidewire (GW) passage, seen entering the trachea between the first and second tracheal rings. CR, cricoid cartilage in cross section; ETT, endotracheal tube tip; T1, first tracheal ring in cross section; T2, second tracheal ring in cross section.