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. 2021 Jun 25;11:702924. doi: 10.3389/fonc.2021.702924

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Copyright © 2021 Li, Zhang, Liu, Chen and Dang

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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Comparison of ICIs efficacy between patients with and without brain metastases. OS, overall survival; PFS, progression-free survival; ICIs, immune checkpoint inhibitors; CT, chemotherapy; HR, hazard ratio; CI, confidence interval.