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. 2021 May 28;11:330. doi: 10.1038/s41398-021-01441-4

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Forest plot displaying effect estimates and confidence interveals for both individual studies and overall meta-analysis. Each study is represented by a block at the point estimate of the intervention effect with a horizontal line extending on each side for the confidence interval. The area of the block indicates the weight assigned to that study in the meta-analysis.