Thomson, A B What is the impact of the use of nonsteroidal anti-inflammatory drugs? [electronic resource] - Canadian journal of gastroenterology = Journal canadien de gastroenterologie Mar 1999 - 115-7 p. digital Publication Type: Journal Article ISSN: 0835-7900 Subjects--Topical Terms: Anti-Inflammatory Agents, Non-Steroidal--adverse effectsDuodenum--drug effectsGastric Mucosa--drug effectsHumansPeptic Ulcer--chemically induced