Langman, M J Epidemiologic evidence on the association between peptic ulceration and antiinflammatory drug use. [electronic resource] - Gastroenterology Feb 1989 - 640-6 p. digital Publication Type: Journal Article; Review ISSN: 0016-5085 Standard No.: 10.1016/s0016-5085(89)80060-5 doi Subjects--Topical Terms: Anti-Inflammatory Agents, Non-Steroidal--adverse effectsDuodenal Ulcer--chemically inducedEpidemiologic MethodsHumansRetrospective StudiesRisk FactorsStomach Ulcer--chemically induced