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2. Infoscan Services, Internal Analgesics Category, Total Food, Drug and Mass Merch, 52 weeks ending July 16, 2000,2000
3. Nonprescription drugs USA 1999, Internal Analgesics Product Category,1999
4. Nonsteroidal antiinflammatory drugs and dyspepsia in the elderly;Talley;Dig Dis Sci,1995
5. Effect of aspirin on the human stomach in normals: endoscopic comparison of damage produced one hour, 24 hours, and 2 weeks after administration;O'Laughlin;Scand J Gastroenterol,1981