About the Authors

Timothy M. Brown

Affiliation Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom

Annette E. Allen

Affiliation Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom

Jazi al-Enezi

Affiliation Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom

Jonathan Wynne

Affiliation Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom

Luc Schlangen

Affiliation Philips Lighting, Eindhoven, The Netherlands

Vanja Hommes

Affiliation Philips Consumer Lifestyle, Drachten, The Netherlands

Robert J. Lucas

Robert.lucas@manchester.ac.uk

Affiliation Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom

Competing Interests

The authors have the following interests. VH and LS are employed by Royal Philips Electronics N.V. (the Netherlands), one of the funders of this study. There are no patents, products in development or marketed products to declare interfering with the content of the manuscript. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: TMB AEA RJL. Performed the experiments: TMB AEA JE JW. Analyzed the data: TMB AEA JE. Contributed reagents/materials/analysis tools: LS VH. Wrote the paper: RJL TMB.