1. National Institute for Health and Care Excellence. Acute upper gastrointestinal bleeding in over 16s – management. Clinical Guideline CG141.
2. National Confidential Enquiry into Patient Outcome and Death. Time to get control. A review of the care received by patients who had a severe gastrointestinal haemorrhage,2015
3. Epidemiology of hospitalization for acute upper gastrointestinal hemorrhage: a population-based study;Longstreth;Am J Gastroenterol,1995
4. Acute upper gastrointestinal bleeding in the UK: patient characteristics, diagnoses and outcomes in the 2007 UK audit;Hearnshaw;Gut,2011
5. American Gastroenterological Association (AGA) Institute medical position statement on obscure gastrointestinal bleeding;Raju;Gastroenterology,2007