title: Acute upper gastrointestinal haemorrhage.
authors.forename: I
authors.initials: I
authors.lastname: Bhattacharya
mesh_terms: D000553:Ambulatory Care; D004632:Emergency Medical Services; D006471:Gastrointestinal Hemorrhage / Q000453:epidemiology*; D006801:Humans; D012307:Risk Factors