Loss of Inspiratory Augmentation as a Predictive Factor for the Development of Gastroesophageal Reflux Disease After Peroral Endoscopic Myotomy in Patients With Achalasia. - Kim, Min-Jae; Jeon, Se Yeon; Park, Jun Chul; Youn, Young Hoon; Park, Hyojin (Journal of Neurogastroenterology & Motility, 2026)