RT Book, Section A1 McQuaid, Kenneth R. A2 Papadakis, Maxine A. A2 McPhee, Stephen J. A2 Rabow, Michael W. SR Print(0) ID 1175801983 T1 Esophageal Motility Disorders T2 Current Medical Diagnosis & Treatment 2021 YR 2021 FD 2021 PB McGraw-Hill Education PP New York, NY SN 9781260469868 LK accessmedicine.mhmedical.com/content.aspx?aid=1175801983 RD 2023/06/09 AB Key Clinical Updates in Esophageal Motility DisordersPer oral endoscopic myotomy (POEM) increasingly is supplanting pneumatic dilation and surgical Heller myotomy as a preferred first-line treatment option in achalasia.