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A aaas gene achalasia esophageal achalasia primary achalasia alacrima anorectal catheters aperistalsis D deglutition disorders diffuse esophageal spasm dysphagia E esophageal achalasia esophageal function esophageal motility disorder esophageal spasm diffuse esophageal spasm esophagomyotomy esophagram

L lower esophageal sphincter M manometries manometry catheter muscle bundle N nutcracker esophagus P partial fundoplication poem primary achalasia S second generation cephalosporins V volume of bolus