Retraction notice to "Long-term outcomes of per-oral endoscopic myotomy in patients with achalasia with a minimum follow-up of 2 years: an international multicenter study": [YMGE 85 (2017) 927-933].
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Gastrointest Endosc. 2018 Apr;87(4):1164. doi: 10.1016/j.gie.2018.02.005.
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PMID: 29571778