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Continue to ChatPeroral endoscopic myotomy (POEM) Vs. Laparoscopic HellerMyotomy (LHM), does gastric extension length matter? https://www.sages.org/meetings/annual-meeting/abstracts-archive/peroral-endoscopic-myotomy-poem-vs-laparoscopic-hellermyotomy-lhm-does-gastric-extension-length-matter/