The distal esophageal sphincter and its relationship to gastroesophageal reflux.
D002404:Catheterization; D004943:Esophagogastric Junction / Q000503:physiopathology*; D005764:Gastroesophageal Reflux / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008365:Manometry