Achalasia
Myotomy
Medicine
Esophageal motility disorder
Esophageal sphincter
Surgery
Esophagogastric junction
Natural orifice transluminal endoscopic surgery
High resolution manometry
Esophageal Disorder
Endoscopic submucosal dissection
Esophagus
Laparoscopy
Internal medicine
Adenocarcinoma
Disease
Cancer
Reflux
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