About the Authors

Lionel Rigoux

Affiliations UPMC Univ Paris 06, UMR 7222, ISIR, Paris, France, CNRS, UMR 7222, ISIR, Paris, France

Emmanuel Guigon

emmanuel.guigon@gmail.com

Affiliations UPMC Univ Paris 06, UMR 7222, ISIR, Paris, France, CNRS, UMR 7222, ISIR, Paris, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LR EG. Performed the experiments: LR EG. Analyzed the data: LR EG. Contributed reagents/materials/analysis tools: LR EG. Wrote the paper: LR EG.