title: More about refractory duodenal ulcers.
mesh_terms: D000535:Aluminum / Q000627:therapeutic use; D000897:Anti-Ulcer Agents / Q000627:therapeutic use; D004351:Drug Resistance; D004381:Duodenal Ulcer / Q000188:drug therapy*; D006635:Histamine H2 Antagonists / Q000627:therapeutic use; D006801:Humans; D013392:Sucralfate
chemical_list: D000897:Anti-Ulcer Agents; D006635:Histamine H2 Antagonists; D013392:Sucralfate; D000535:Aluminum