1. Incidence of and mortality from acute upper gastrointestinal haemorrhage in the United Kingdom;Rockall;British Medical Journal,1995
2. Occult gastrointestinal bleeding;Richter;Gastroenterology Clinics of North America,1994
3. ‘Missed’ upper gastrointestinal tract lesions may explain ‘occult’ bleeding;Descamps;Endoscopy,1999
4. Vascular lesions: ectasias, tumors, and malformations;Clouse,1999
5. Angiodysplasia of the gastrointestinal tract;Foutch;American Journal of Gastroenterology,1993