title: Motility studies in fifty patients with achalasia of the esophagus.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002404:Catheterization / Q000379:methods; D003679:Deglutition; D004931:Esophageal Achalasia / Q000503:physiopathology*; D004947:Esophagus / Q000503:physiopathology*; D005260:Female; D005769:Gastrointestinal Motility; D006801:Humans; D008297:Male; D008365:Manometry; D008875:Middle Aged; D011187:Posture; D011312:Pressure; D013270:Stomach / Q000503:physiopathology