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. 2021 Jul 21;11:671874. doi: 10.3389/fonc.2021.671874

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Copyright © 2021 Wang, Zhou, Qiao, Li, Zhao, Cheng, Chen and Zhou

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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Meta-analysis of the associations between early reduction of ctDNA and (A) overall survival, (B, C) progression-free survival, (D) objective response rate.