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. 2019 Apr 2;19:72. doi: 10.1186/s12890-019-0838-2

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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. 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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Fig. 3 — Kaplan–Meier comparisons in the Bev and non-Bev groups. a Progression-free survival (PFS). b Overall survival (OS). Crosses denote censoring events. There was a significant difference in median PFS between the Bev (dotted line) and non-Bev (solid line) groups (p = 0.026). NR., not reached