. 2022 Jan 7;101(1):e28528. doi: 10.1097/MD.0000000000028528
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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. http://creativecommons.org/licenses/by/4.0
Figure 1.
The PRISMA flow chart of the selection process.