About the Authors

James M. Mason

j.m.mason@durham.ac.uk

Affiliation Durham Clinical Trials Unit, Durham University, Queen’s Campus, Stockton-on-Tees, United Kingdom

Kim S. Thomas

Affiliation Centre of Evidence-Based Dermatology, University of Nottingham, Nottingham, United Kingdom

Angela M. Crook

Affiliation Medical Research Council Clinical Trials Unit, London, United Kingdom

Katharine A. Foster

Affiliation Centre of Evidence-Based Dermatology, University of Nottingham, Nottingham, United Kingdom

Joanne R. Chalmers

Affiliation Centre of Evidence-Based Dermatology, University of Nottingham, Nottingham, United Kingdom

Andrew J. Nunn

Affiliation Medical Research Council Clinical Trials Unit, London, United Kingdom

Hywel C. Williams

Affiliation Centre of Evidence-Based Dermatology, University of Nottingham, Nottingham, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JMM HW KT JC. Performed the experiments: KT JC. Analyzed the data: JMM. Wrote the paper: JMM KF AC AN KT.