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. 2021 Jul 28;11:695640. doi: 10.3389/fonc.2021.695640

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Copyright © 2021 Li, Liu, Zhou, Zhou, Liu, Zhao, Güngör, Wang, Pei, Pei and Tan

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The survival curves were applied to display the effect of radiotherapy in middle-aged stage II/III RC patients. All survival comparisons failed to reach statistical differences. (A) The total middle-aged stage II/III RC patients before PSM. (B) RT vs. non-RT in all middle-aged stage II/III RC patients after PSM. (C) nRT vs. non-RT in all middle-aged stage II/III RC patients after PSM. (D) Middle-aged stage II/III RC patients without chemotherapy before PSM. (E) RT vs. non-RT in middle-aged stage II/III RC patients without chemotherapy after PSM. (F) nRT vs. non-RT in middle-aged stage II/III RC patients without chemotherapy after PSM. (The results of PSM are summarized in Table S4).