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There was an error in the DOI number of an article published in the September 2006 issue of the journal (Alarcón GS, Calvo-Alén J, McGwin G Jr, Uribe AG, Toloza SMA, Roseman JM, et al. Systemic lupus erythematosus in a multiethnic cohort: LUMINA XXXV. Predictive factors of high disease activity over time. Ann Rheum Dis 2008;65:1168–74.) The correct DOI is 10.1136/ard.2005.046896, not 10.1136/ard.200X.046896 as was printed.
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