The "furrow sign" in confirming proper gastric extent and direction of the myotomy at the end of peroral endoscopic myotomy.
Hugo Ikuo UchimaRaquel Muñoz-GonzálezAnna CalmNoemí CaballeroJorge EspinosVicente Moreno de VegaIngrid MarinPublished in: Endoscopy (2023)
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