Adamopoulos, AB Baibas, NM Efstathiou, SP Tsioulos, DI and Mitromaras, AG Tsami, AA Mountokalakis, TD, Differentiation between patients with acute upper gastrointestinal
bleeding who need early urgent upper gastrointestinal endoscopy and
those who do not. A prospective study, European Journal of Gastroenterology and Hepatology, (15), 381-387, 2003, Lippincott, Williams & Wilkins, 0954-691X, 1473-5687