Meta-Analysis
Copyright ©The Author(s) 2016.
World J Gastroenterol. Sep 14, 2016; 22(34): 7841-7850
Published online Sep 14, 2016. doi: 10.3748/wjg.v22.i34.7841
Figure 1
Figure 1 PRISMA selection. Study selection process according to the PRISMA statement by the Cochrane Collaboration.