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. 2019 Jun 19;9:529. doi: 10.3389/fonc.2019.00529

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Copyright © 2019 Chung, Koom, Keum, Chang, Shin, Ahn, Min, Lee, Kim and Yoon.

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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Kaplan-Meier estimates of infield progression-free rate (A) and severe late toxicity-free rate (B) according to groups divided by treatment aim (Group 1, salvage reRT with a surgical component; Group 2, definitive reRT; Group 3, palliative reRT).