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. 2021 Dec 21;11:777686. doi: 10.3389/fonc.2021.777686

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Copyright © 2021 Gu, Shang, Zhuo, Zhou, Liu, Wang, Che and Chen

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 plots of HR comparing overall survival between patients with PD-L1-positive tumors treated with ICI treatment and chemotherapy. HR, hazard ratio; CI, confidence interval; ICI, immune checkpoint inhibitor.