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In the Editorial entitled “Differential Effects of Aspirin Before and After Diagnosis of Colorectal Cancer” published in the June 26, 2013, issue of JAMA (2013;309:2598-2599. doi:10.1001/jama.2013.6600), a reference and new language were added and the abbreviation for prostaglandin-endoperoxide synthase 2 was corrected. This article has been corrected online.
Additional Reference and Language and Misspelled Abbreviation. JAMA. 2013;310(2):208. doi:10.1001/jama.2013.8494