Figure 1. PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) flow diagram of the article selection process. * There is no evidence that supports that one of these studies was conducted beyond the recruitment phase.
Figure 1. PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) flow diagram of the article selection process. * There is no evidence that supports that one of these studies was conducted beyond the recruitment phase.