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Retrospective Cohort Study
©The Author(s) 2026.
World J Gastrointest Surg. Jan 27, 2026; 18(1): 112927
Published online Jan 27, 2026. doi: 10.4240/wjgs.v18.i1.112927
Figure 1
Figure 1 Cannula. Outer tube (purple arrow), internal tube (orange arrow), and side perforations of the tube (blue arrow); the black arrow indicates the junction where air can enter.


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