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. 2017 Jun 2;11:17. doi: 10.1186/s13037-017-0133-1

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© The Author(s). 2017

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 estimates of the cumulative risk of failure according to the treatment assessed at 100 months’ follow-up. The log rank test compared two survival curves across multiple time points. Patients who need of blood transfusion had lower disease-free survival than those who did not need transfusion (p = 0.003)