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. 2012 Nov 14;35(12):2690–2697. doi: 10.2337/dc12-0312

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© 2012 by the American Diabetes Association.

Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. See http://creativecommons.org/licenses/by-nc-nd/3.0/ for details.

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Search results. *Articles that were not a peer-reviewed, published randomized clinical trial or observational study were not double-counted (among articles that did not specify the proportion [numerator and denominator] of subjects seroprotected by diabetes status [or data available to allow the calculation of the proportions] or the odds ratio from a multivariate analysis that included diabetes as a predictor variable) so that the total would equal 15. †The number of articles does not total 13 because one article met two inclusion criteria.