Meta-Analysis
Copyright ©The Author(s) 2021.
World J Gastroenterol. Feb 28, 2021; 27(8): 737-750
Published online Feb 28, 2021. doi: 10.3748/wjg.v27.i8.737
Figure 1
Figure 1 The flow chart of the selection process for the studies included in this meta-analysis. In total, 1527 records were identified from all sources (Embase, PubMed, and Cochrane Library). Only 17 studies involving 3775 patients met all inclusion criteria and were selected for the meta-analysis.