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. 2019 Nov 18;17:194. doi: 10.1186/s12957-019-1738-x

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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. 1 — Kaplan–Meier curves of the overall survival of 120 patients with lung cancer metastases to the spine: a Patients with normal and abnormal tumor markers (TM; p < 0.0001, logrank test). b Patients who were and were not subjected to targeted therapy (p < 0.0001, logrank test)