title: H2-receptor antagonist non-responders.
mesh_terms: D004381:Duodenal Ulcer / Q000188:drug therapy* / Q000503:physiopathology; D005744:Gastric Acid / Q000378:metabolism; D006635:Histamine H2 Antagonists / Q000627:therapeutic use*; D006801:Humans
chemical_list: D006635:Histamine H2 Antagonists