Paspatis, G A An epidemiological study of acute upper gastrointestinal bleeding in Crete, Greece. [electronic resource] - European journal of gastroenterology & hepatology Nov 2000 - 1215-20 p. digital Publication Type: Journal Article ISSN: 0954-691X Standard No.: 10.1097/00042737-200012110-00008 doi Subjects--Topical Terms: AdolescentAdultAgedAnti-Inflammatory Agents, Non-Steroidal--adverse effectsChi-Square DistributionComorbidityFemaleGastrointestinal Hemorrhage--epidemiologyGreece--epidemiologyHumansIncidenceMaleMiddle AgedProspective StudiesStatistics, Nonparametric