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. 2022 Jun 14;21:15347354221104092. doi: 10.1177/15347354221104092

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© The Author(s) 2022

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — The flowchart of the selection for including study.

Abbreviations: CNKI, China national knowledge infrastructure; VIP, Chinese scientific journal database; CBMDisc, Chinese biomedical literature database.