title: Measurement of gastro-oesophageal acid reflux: its significance in hiatus hernia.
mesh_terms: D003679:Deglutition; D004942:Esophagitis, Peptic / Q000209:etiology / Q000503:physiopathology; D004945:Esophagoscopy; D004947:Esophagus / Q000503:physiopathology; D005764:Gastroesophageal Reflux / Q000503:physiopathology*; D006548:Hernia, Diaphragmatic / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008722:Methods; D010434:Pepsin A / Q000009:adverse effects; D011312:Pressure; D011859:Radiography; D012890:Sleep
chemical_list: D010434:Pepsin A