Correction to: International Journal of Obesity advance online publication, 20 May 2008; doi:10.1038/ijo.2008.68

Owing to a typesetting error in Tables 1 and 2 of the above paper some cells and the background of some text in the legend are gray, while they should have been white.

The correct tables are reproduced below.

Table 1 Phenotypic characteristics of MZ and DZ twins by gender
Table 2 Significant associations between the SNPs in the LEPR and the LEP gene and the metabolic risk factors for type 2 diabetes; adjusted for significant covariates

The typesetters would like to apologize for this error.