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. 2018 Jun 7;8:8713. doi: 10.1038/s41598-018-26389-2

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Bland-Altman plots show the differences in the cross-section areas between automated and manually segmented airways from OCT images in the y-axis, and the average areas of the two in the x-axis. Both control (A) and MIC airways (B) show that there is very little bias (<5%), indicating good correlation between manual and automated segmentation results; 95% limits of agreement and bias versus mean are shown by dashed lines.