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. 2021 Feb 23;28:1073274821997430. doi: 10.1177/1073274821997430

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© The Author(s) 2021

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 2. — Forest plot of the overall survival rates: (A) 6-month survival rates. (B) 12-month survival rates (C) 18-month survival rates. Horizontal lines represent 95% confidence intervals (CIs). M-H, Mantel-Haenszel; df, degrees of freedom.