Meta-Analysis
Copyright ©The Author(s) 2021.
World J Gastroenterol. Sep 14, 2021; 27(34): 5775-5792
Published online Sep 14, 2021. doi: 10.3748/wjg.v27.i34.5775
Figure 1
Figure 1  PRISMA flowchart: Preferred reporting items for systematic review and meta-analysis.