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. 2019 Jul 2;9:78. doi: 10.1186/s13613-019-0549-0

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 2 — Difference in imposed work of breathing (∆WOBimp) expressed in Joules/L during extubation readiness testing using continuous positive airway pressure (CPAP) with or without added pressure support (PS) stratified by endotracheal tube (ETT) size. Data are shown as median (IQR)