1. Initial management of acute upper gastrointestinal bleeding: From initial evaluation up to gastrointestinal endoscopy;Cappell;Med Clin North Am,2008
2. Acute gastrointestinal bleeding;Terdiman,2005
3. Gastrointestinal bleeding: An evidence-based ED approach to risk stratification;Westhoff;Emerg Med Pract,2004
4. Risk of gastrointestinal haemorrhage with long term use of aspirin: Meta-analysis;Derry;BMJ,2000
5. A meta-analysis of severe upper gastrointestinal complications of nonsteroidal antiinflammatory drugs;Ofman;J Rheumatol,2002