Labenz, J Helicobacter pylori increases the risk of peptic ulcer bleeding: a case-control study. [electronic resource] - Italian journal of gastroenterology and hepatology Mar 1999 - 110-5 p. digital Publication Type: Journal Article ISSN: 1125-8055 Subjects--Topical Terms: AdultAgedAged, 80 and overAnti-Inflammatory Agents, Non-Steroidal--adverse effectsCase-Control StudiesFemaleGastritis--complicationsHelicobacter Infections--complicationsHelicobacter pyloriHumansMaleMiddle AgedPeptic Ulcer--complicationsPeptic Ulcer Hemorrhage--etiologyProspective StudiesRisk Factors