title: Peptic ulcer in the Royal Navy.
mesh_terms: D002927:Cimetidine / Q000627:therapeutic use; D004381:Duodenal Ulcer / Q000188:drug therapy; D005663:Furans / Q000627:therapeutic use; D006635:Histamine H2 Antagonists / Q000627:therapeutic use; D006801:Humans; D008297:Male; D009326:Naval Medicine; D010437:Peptic Ulcer / Q000628:therapy*; D011899:Ranitidine
chemical_list: D005663:Furans; D006635:Histamine H2 Antagonists; D002927:Cimetidine; D011899:Ranitidine