Data sources and search strategy
This systematic review was conducted under the guidance of the Cochrane
Collaboration Handbook.17 We reported the findings
following the Preferred Reporting Items for Systematic Reviews and
Meta-Analyses (PRISMA) statement.18 We included four
bibliography databases, including PubMed, Embase, China National
Knowledge Infrastructure (CNKI), and Wanfang, as the sources.
Considering the limited publication coverage in Chinese in PubMed and
Embase, we included two major Chinese bibliography databases, CNKI and
Wanfang.19 We searched the publications till March
18th, 2023.