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Systematic Reviews
Copyright: ©Author(s) 2026.
World J Gastroenterol. Dec 7, 2026; 32(45): 124008
Published online Dec 7, 2026. doi: 10.3748/wjg.124008
Figure 1
Figure 1 Preferred reporting items for systematic reviews and meta-analyses 2020 flow diagram illustrating the systematic literature search and study selection process. Records were identified from PubMed/MEDLINE (n = 842), EMBASE (n = 612), and the Cochrane Library (n = 69), with 27 additional records identified through citation searching and society guideline review. After removal of duplicates and sequential screening, 26 studies met predefined inclusion criteria and were included in the qualitative synthesis. pts: Patients; RCT: Randomized controlled trial.


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