Tu1507 Creation of a Second Sub-Mucosal Tunnel Enabled Successful Per-Oral Endoscopic Myotomy (POEM) in a Patient With Previous Thoracocotomy and Heller's Myotomy
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2018 ◽
Vol 87
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pp. 972-985
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2018 ◽
Vol 87
(4)
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pp. 934-943.e18
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2018 ◽
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2020 ◽