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. 2019 Mar 27;19:46. doi: 10.1186/s12876-019-0965-5

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© The Author(s). 2019

Open Access This 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. 4 — Forest plot of the KRAS mutation in the prediction of right-sided colon cancer patients. The squares and horizontal lines correspond to the study-specific HR and 95% CI. The diamond represents the summary HR and 95% CI. The diamond locates to the left but touches the vertical line means the no significant difference between patients with and without KRAS mutation regarding the OS