Scientific Reports 4: Article number: 6065; published online: 14 August 2014; updated: 22 April 2016

In this Article, B. Busser is incorrectly affiliated with ‘Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne cedex, France’. The correct affiliation is listed below:

Université Joseph Fourier, Inserm U823, IAB, F-38000 Grenoble, France