About the Authors

Min Hua Jen

m.h.jen@imperial.ac.uk

Affiliation Dr Foster Unit at Imperial College, Department of Primary Care and Social Medicine, Imperial College London, London, United Kingdom

Alex Bottle

Affiliation Dr Foster Unit at Imperial College, Department of Primary Care and Social Medicine, Imperial College London, London, United Kingdom

Azeem Majeed

Affiliation Department of Primary Care and Social Medicine, Imperial College London, London, United Kingdom

Derek Bell

Affiliation Department of Medicine, Imperial College London, Chelsea and Westminster Campus, London, United Kingdom

Paul Aylin

Affiliation Dr Foster Unit at Imperial College, Department of Primary Care and Social Medicine, Imperial College London, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MHJ AB AM DB PA. Analyzed the data: MHJ. Wrote the paper: MHJ.