Systematic Reviews
Copyright ©The Author(s) 2020.
World J Gastroenterol. Nov 21, 2020; 26(43): 6891-6908
Published online Nov 21, 2020. doi: 10.3748/wjg.v26.i43.6891
Figure 1
Figure 1 Preferred reporting items for systematic reviews and meta-analyses flow diagram depicting the number of studies identified and excluded at each stage of the review process. LLMIC: Lower-middle income countries.