title: Letter: Hiatus hernia and competence of gastro-oesophageal sphincter.
mesh_terms: D004943:Esophagogastric Junction / Q000503:physiopathology*; D006548:Hernia, Diaphragmatic / Q000503:physiopathology*; D006551:Hernia, Hiatal / Q000503:physiopathology*; D006801:Humans; D008365:Manometry; D013270:Stomach / Q000502:physiology