Fig. 2
PRISMA [Preferred Reporting Items for Systematic Reviews and Meta-Analyses] diagram. From: Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009) [21]
Fig. 2 | Health Research Policy and Systems
PRISMA [Preferred Reporting Items for Systematic Reviews and Meta-Analyses] diagram. From: Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009) [21]