Figure 1.

PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) 2020 flow diagram representing the searching and selection process for this review [15]. ^a This is the number of records identified minus the number from the duplicates removed box; ^b This is the number of articles obtained in preparation for full text screening (subtract the number of excluded records from the total number screened (previous step) to obtain the number sought for retrieval); ^c This should be the number of reports sought for retrieval minus the number of reports not retrieved (previous step).