Retraction to International Journal of Obesity https://doi.org/10.1038/s41366-018-0201-3, published online 11 September 2018

The Editors have retracted this article. The article cites approval from an institutional ethics committee in France, but it also reports the analysis of samples collected from individuals in several other countries. The authors were not able to provide documentation of approval from appropriate ethics committees in each of these additional countries, or of compliance with local regulations regarding the use of such samples in research.

M. Million disagrees with this retraction. The remaining authors did not respond to correspondence from the Publisher about this retraction.