Figure 1
The flowchart begins with the identification phase, where previous studies included in the review are noted as zero. New studies are identified via databases and registers, with records identified from Scopus and PubMed. Records are then screened, with duplicates and ineligible records removed. The remaining records are screened, and those excluded are noted. Reports sought for retrieval are assessed for eligibility, and new studies included in the review are noted. The total studies included in the review are summarized at the end.PRISMA flow diagram of the study selection process