title: Are gastric secretion tests needed in duodenal ulcer surgery?
mesh_terms: D004381:Duodenal Ulcer / Q000601:surgery*; D005745:Gastric Acidity Determination; D006801:Humans; D007328:Insulin; D010418:Pentagastrin; D011300:Preoperative Care; D014628:Vagotomy
chemical_list: D007328:Insulin; D010418:Pentagastrin