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. 2019 Oct 30;68(2):417–425. doi: 10.1111/jgs.16219

Figure 1.

Figure 1

Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA) flow chart showing the selection process of the guidelines.CPG: Canadian Clinical Practice Guidelines InfoBase; G‐I‐N: Guidelines International Network; NGC: National Guideline Clearinghouse; SIGN Scottish Intercollegiate Guidelines Network (SIGN)