title: Gastric aphthous ulcers.
mesh_terms: D002927:Cimetidine / Q000627:therapeutic use*; D005260:Female; D006146:Guanidines / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013276:Stomach Ulcer / Q000601:surgery / Q000628:therapy*
chemical_list: D006146:Guanidines; D002927:Cimetidine