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. 2018 Dec 12;8:603. doi: 10.3389/fonc.2018.00603

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Copyright © 2018 Du, Pan, Lai, Xu, Deng, Wang, Yao and Wu.

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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Forest plot and meta-analysis of intacranial progression-free survival (PFS) f in patients with asymptomatic brain metastases. RT, radiotherapy; TKI, tyrosine kinase inhibitor.