title: The acid-barium test as an index of intermittent gastro-oesophageal reflux.
mesh_terms: D001466:Barium Sulfate; D003679:Deglutition; D005471:Fluoroscopy; D005764:Gastroesophageal Reflux / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006356:Heartburn / Q000503:physiopathology; D006801:Humans; D006851:Hydrochloric Acid; D006863:Hydrogen-Ion Concentration; D007827:Laryngitis / Q000503:physiopathology; D009040:Motion Pictures; D010612:Pharyngitis / Q000503:physiopathology
chemical_list: D001466:Barium Sulfate; D006851:Hydrochloric Acid