X Feng, E Linghu, N Chai, H Ding - Saudi Journal of …, 2018 - journals.lww.com
Results: A total of 568 achalasia patients who underwent POEM were enrolled. For EMIA
classification, there were 40 (7.0%), 373 (65.7%), 139 (24.5%), 14 (2.5%), 1 (0.2%), and 1 …