1. Public Health, Epidemiology and Biostatistics, School of Health and Population Sciences, University of Birmingham, Edgbaston, Birmingham, UK
2. School of Sport, Exercise & Rehabilitation Science, University of Birmingham, Edgbaston, Birmingham, UK
3. Health Economics, School of Health and Population Sciences, University of Birmingham, Edgbaston, Birmingham, UK
4. Research Institute of Primary Care and Health Sciences, Keele University, Staffordshire, UK
5. Primary Care Clinical Sciences, School of Health and Population Sciences, University of Birmingham, Edgbaston, Birmingham, UK
6. School of Clinical and Experimental Medicine, University of Birmingham, Birmingham, UK
7. Centre for Exercise and Rehabilitation Science, University Hospitals of Leicester NHS Trust, Glenfield Hospital, Leicester, UK