SE-023 - Efficacy of Peroral Endoscopic Myotomy for Achalasia: Evaluation of Treatment Effect using Timed Barium Esophagography according to the Diameter of Lower Esophageal Sphincter
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SE-023 - Efficacy of Peroral Endoscopic Myotomy for Achalasia: Evaluation of Treatment Effect using Timed Barium Esophagography according to the Diameter of Lower Esophageal Sphincter