This meta-analysis demonstrated that both unOcn and tOcn were similarly and negatively correlated with FPG and HbA1c in humans. The negative correlations between unOcn and glucose metabolism appear to be more pronounced in men than in women.

Panel a of Fig. 3 and the accompanying legend were incorrect. The authors and the publisher apologize for this error and regret any inconvenience caused. The amended figure is given here.The online version of the original article can be found at http://dx