Armstrong CP, et al: Non-steroidal anti-inflammatory drugs and life threatening complications of peptic ulceration. Gut, 28: 527-532, 1987
Yeomans ND, et al: Prevalence and incidence of gastroduodenal ulcers during treatment with vascular protective doses of aspirin. Aliment Pharmacol Ther, 22: 795-801, 2005
Papatheodoridis GV, et al: Effects of Helicobarter pylori and nonsteroidal anti-inflammatory drugs on peptic ulcer disease: a systematic review. Clin Gastroenterol Hepatol, 4: 130-142, 2006
Hallas J, et al: Use of single and combined antithrombotic therapy and risk of serious upper gastrointestinal bleeding: population based case-control study. BMJ.333: 726, 2006