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. 2019 Nov 13;7:299. doi: 10.1186/s40425-019-0800-0

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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. 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 estimates of the patient population for a progression-free survival (PFS) and b overall survival (OS). The median PFS and OS was estimated to 3.0 months (95% CI 2.4–3.6) and 16.1 months (95% CI 12.9–19.3), respectively. One patient was not included in the Kaplan-Meier analysis for PFS and OS due to missing data