The authors wish to retract this article because of an unintended error in statistical applications. A subsequent reanalysis of the data has shown that a number of the findings of the study described in this publication are no longer definitively different. The corresponding author voluntarily reported these discrepancies to the editors of Diabetes Care. The decision to retract the article is supported by all the authors based on their reevaluation of the data. The decision to retract the article is also supported by the editors of the journal and the American Diabetes Association, the publisher of Diabetes Care. At a later date, the authors intend to submit a revised article to Diabetes Care for full peer review with the appropriate statistical analysis applied.