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. 2016 Oct 12;16:795. doi: 10.1186/s12885-016-2826-8

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© The Author(s). 2016

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 — Flow chart of the study. Samples flow and experimental data are displayed by dashed lines and statistical analyses by solid lines. Numbers of 5-FU treated patients in red rectangles and untreated patients in blue rectangles