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. 2020 Feb 19;8(2):36. doi: 10.3390/biomedicines8020036

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Kaplan–Meier survival analysis of time to treatment failure (TTF) and overall survival (OS). (A) TTF for the overall patients of this study. (B) OS for all patients of this study. (C) Comparison of the TTF between the three different PD-L1 level groups. (D) Comparison of the OS between the three different PD-L1 level groups.