About the Authors

Jet G. Sanders

Affiliation University of York, Heslington, York, YO10 5DD, United Kingdom

Rob Jenkins

rob.jenkins@york.ac.uk

Affiliation University of York, Heslington, York, YO10 5DD, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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