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. 2020 Oct 29;10:580277. doi: 10.3389/fonc.2020.580277

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Copyright © 2020 Liu, Xu, Yuan, Zhang, Zhang, Song and Yang

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 curves of PFS stratified by the three classification groups. Heterogeneous group (n = 12, median PFS 5.5 months), low ratio of FES/FDG (n = 11, median PFS 29.4 months), high ratio of FES/FDG (n = 12, median PFS 14.7 months).