title: Duodenal ulcer: an update.
mesh_terms: D004381:Duodenal Ulcer / Q000188:drug therapy* / Q000209:etiology; D005663:Furans / Q000627:therapeutic use; D006635:Histamine H2 Antagonists / Q000627:therapeutic use*; D006801:Humans; D011899:Ranitidine
chemical_list: D005663:Furans; D006635:Histamine H2 Antagonists; D011899:Ranitidine