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. 2009 Aug 6;16(10):2771–2778. doi: 10.1245/s10434-009-0651-x

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© The Author(s) 2009

This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

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Fig. 2 — The survival curves according to the R² value in stage II rectal cancer. Group I represents the exponential decrease group compared with group II, the nonexponential decrease group. a There was a significant difference between the two groups in OS (P = 0.021). b There was no statistically significant difference between the groups in DFS (P = 0.167)