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. 2015 Dec 30;4:836. doi: 10.1186/s40064-015-1606-2

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© Akaike et al. 2015

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.

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Fig. 1 — Kaplan–Meier analysis based on the risk classification (modified NIH consensus criteria). Intermediate-risk or high-risk tumors show significantly shorter disease free survival (a: P < 0.001) and overall survival (b: P = 0.028) compared to very low-risk or low-risk tumors. Disease-free survival rate: very low vs. low, P = 0.55; low vs. intermediate, P = 0.108; very low vs. intermediate, P = 0.225; intermediate vs. high, P = 0.121; very low vs. high, P = 0.015. Overall survival rate: very low vs. low, P = 0.646; low vs. intermediate, P = 0.515; very low vs. intermediate, P = 0.387; intermediate vs. high, P = 0.322; very low vs. high, P = 0.065