About the Authors

Laura Webber

laura.webber@heartforum.org.uk

Affiliation National Heart Forum, London, England

Fanny Kilpi

Affiliation National Heart Forum, London, England

Tim Marsh

Affiliation National Heart Forum, London, England

Ketevan Rtveladze

Affiliation National Heart Forum, London, England

Martin Brown

Affiliation National Heart Forum, London, England

Klim McPherson

Affiliation New College, University of Oxford, Oxford, England

Competing Interests

The study was funded by a commercial source - GlaxoSmithKline. However, this does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: LW FK KR MB TM KM. Performed the experiments: MB TM KM. Analyzed the data: LW FK KR. Contributed reagents/materials/analysis tools: LW FK KR MB TM KM. Wrote the paper: LW FK KM. Revised the article critically for intellectual content and approved of the final version: KR MB TM. Approved the final version: LW FK KM MB TM KM.