Overweight in singletons compared to children with siblings: the IDEFICS study.

Correction to: Nutrition and Diabetes (2012) 2: e35; doi:10.1038/nutd.2012.8; published online 2 July 2012

Since the publication of this article the authors have noticed an error in the numbering of the references 8–11.

The correct order of references is as follows:

8 Christakis NA and Fowler JH. The spread of obesity in a large social network over 32 years. N Engl J Med 2007; 357: 370–379.

9 Auld MC. Effect of large-scale social interactions on body weight. J Health Econ 2011; 30: 303–316.

10 Júlíusson PB, Eide GE, Roelants M, Waaler PE, Hauspie R, Bjerknes R. Overweight and obesity in Norwegian children: prevalence and sociodemographic factors. Acta Paediatrica 2010; 99: 900–905.

11 Price J. Parent-child quality time: does birth order matter? J Human Resources 2008; 43: 240–265.

The authors would like to apologise for this error.