title: The O.M.G.E. multi-national survey of upper gastro-intestinal bleeding. Some observations and corollaries. World Organization of Gastroenterology Research Committee.
mesh_terms: D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000453:epidemiology*; D014943:Global Health; D006801:Humans; D011379:Prognosis; D012008:Recurrence; D012307:Risk Factors