title: Localised determination of the intragastric pH value during gastroscopy.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000032:analysis / Q000378:metabolism; D005773:Gastroscopy; D006801:Humans; D007202:Indicators and Reagents; D008297:Male; D008722:Methods; D008875:Middle Aged; D013272:Stomach Diseases / Q000175:diagnosis
chemical_list: D007202:Indicators and Reagents