Systematic Reviews
Copyright ©The Author(s) 2019.
World J Gastroenterol. Dec 21, 2019; 25(47): 6866-6875
Published online Dec 21, 2019. doi: 10.3748/wjg.v25.i47.6866
Figure 1
Figure 1 Preferred Reporting Items for Systematic Reviews and Meta-Analyses flow diagram.
Figure 2
Figure 2 Geography of included studies within South America.