
Keywords: POEM, peroral edoscopic myotomy; AC, achalasia; LES, lower esophageal sphincter; LHM, laparoscopic Heller myotomy; EGD, esophagogastroduodenoscopy; PPI, proton pump inhibitors; EGJ, esophagogastric junctionAchalasia; Peroral endoscopic myotomy; Children;