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. 2021 Mar 15;12:607408. doi: 10.3389/fphar.2021.607408

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Copyright © 2021 Abdelrahman, Liu, Jiang, Li, Sun, Zhang 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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Proportional meta-analysis forest plots of the eight treatment strategies for COVID-19 by the random-effect model. Cases, number of patients taking the drug; total, the total number of patients enrolled in the study.