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. 2021 Feb 5;11:634266. doi: 10.3389/fphar.2020.634266

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Copyright © 2021 Liu, Jiang, Liu, Pu, Du, Li, Wang, Ren, Liu, Yang, Chen, Song, Xie and Wang.

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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Kaplan-Meier estimates of proportion recovery. Proportion recovery estimates are shown in all patients before PSM (A) and after PSM (B), after a follow-up of 14 days (C), after a follow-up of 21 days (D), and after a follow-up of 28 days (E). The median and 95% confidence interval (95% CI) are presented in the figure.