title: Managing acute upper gastrointestinal bleeding.
mesh_terms: D000208:Acute Disease; D039602:After-Hours Care; D015897:Comorbidity; D016099:Endoscopy, Gastrointestinal; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging / Q000628:therapy*; D006801:Humans; D017410:Practice Guidelines as Topic; D011859:Radiography; D018570:Risk Assessment; D055502:Secondary Prevention; D006113:United Kingdom