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. 2022 Dec 7;2022(12):CD015477. doi: 10.1002/14651858.CD015477

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Copyright © 2023 The Authors. Cochrane Database of Systematic Reviews published by John Wiley & Sons, Ltd. on behalf of The Cochrane Collaboration.

This is an open access article under the terms of the Creative Commons Attribution-Non-Commercial-No-Derivatives Licence, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

PMC Copyright notice

PRISMA flow diagram of included randomized controlled trials (RCTs) (last search date 5 November 2021). COVID‐NMA is a living systematic review of all trials assessing treatment and preventive interventions for COVID‐19 (Boutron 2020a). This review is a subreview of the COVID‐NMA.

FDA: Food and Drug Administration; ICTRP: World Health Organization (WHO) International Clinical Trials Registry Platform.