. 2021 Mar 22;11(3):575. doi: 10.3390/diagnostics11030575
© 2021 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Figure 6.
The fiberoptic double-lumen tracheal tube.