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. 2024 Mar 25;13:6. doi: 10.1186/s13750-024-00330-9

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© The Author(s) 2024

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — RepOrting standards for Systematic Evidence Syntheses (ROSES) diagram, outlining the process of searching, screening and synthesis for the systematic review. The diagram indicates the inclusion and exclusion process and the numbers of studies retained or excluded at each stage. The ROSES diagram is based on [30]. *Criteria for excluding studies from the quantitative synthesis are non-exclusive (the total sum is less than the numbers reported for each category separately)