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Correction to: International Journal of Obesity advance online publication 16 August 2011; doi: 10.1038/ijo.2011.158
Since the publication of this article the authors have noticed an error in one of the figures (Figure 4A). This error has now been rectified and the corrected article appears in this issue. The html and online pdf versions have also been rectified and now carry the correct figure.
The authors would like to apologize for this error.
