62 Chapter 3 Results Description of included studies The search strategy yielded 17,083 records. After duplicates were removed, 7,483 abstracts remained. Title and abstract screening resulted in 122 full-text records, 48 [24-71] of which were included for the synthesis, see PRISMA flow diagram in Figure 1. Figure 1 Flow diagram for identification, screening and eligibility according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses protocol Adapted From Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group (2009). Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement. PLoS Med 6(7): e1000097. doi:10.1371/journal.pmed1000097
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