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. 2022 Mar 8;67(5):1455–1468. doi: 10.1007/s10620-022-07390-2

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Fig. 1 — Muscle fibers of the proximal stomach that make up the distal portion of the LES. The gastric sling fibers are a continuation of the inner circular fibers of the distal esophagus and when contracted will “pull down” and accentuate the cardiac notch as an anti-reflux mechanism