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World J Gastrointest Surg. Aug 27, 2026; 18(8): 121147
Published online Aug 27, 2026. doi: 10.4240/wjgs.121147
Figure 1
Figure 1 Flow diagram of study selection. The diagram summarises the identification, screening, exclusion, and inclusion of studies used in the narrative review and evidence tables. 1Selected case reports were included in the descriptive discussion when they were innovative or of historical significance. PICO: Patient population, intervention, comparison, and outcome.


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