. 2023 Oct 6;102(40):e34990. doi: 10.1097/MD.0000000000034990
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This is an open access article distributed under the Creative Commons Attribution License 4.0 (CCBY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 5.
Funnel plot for publication bias in all included studies.