title: Cimetidine, pH, and Zollinger-Ellison syndrome.
mesh_terms: D002927:Cimetidine / Q000627:therapeutic use*; D005500:Follow-Up Studies; D005745:Gastric Acidity Determination; D006146:Guanidines / Q000627:therapeutic use*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D013997:Time Factors; D015043:Zollinger-Ellison Syndrome / Q000188:drug therapy*
chemical_list: D006146:Guanidines; D002927:Cimetidine