1British Society of Gastroenterology Endoscopy Committee.Non-vat-iceal upper gastrointestinal haemorrhage : guidelines[J].Gut, 2002,51 (4):1.
2Gralnek IM, Dulai GS.lncremental value of upper endoscopy for triage of patients with acute non-variceal upper-GI hemorrhage[J]. Gastrointest Endose, 2004,60 : 9.