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. 2018 Oct 3;18:153. doi: 10.1186/s12935-018-0648-2

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© The Author(s) 2018

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 — Association between AFR and TNM stage and tumor size in 153 eligible patients. a AFR in TNM 0–I, II and III stage subgroups; b AFR in different tumor size subgroups. *p < 0.05, **p < 0.01, ***p < 0.001, ns not significant