1. Cardiovascular Research Centre, Institutes of Cellular and Genetic Medicine, Faculty of Medical Sciences; Newcastle University; Newcastle upon Tyne UK
2. Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust; Newcastle upon Tyne UK
3. Wellcome Trust Centre for Mitochondrial Research, Institute of Neuroscience, Medical School; Newcastle University; Newcastle upon Tyne UK
4. Cardiology Department, Clinical Centre Serbia, School of Medicine; University of Belgrade; Belgrade Serbia
5. Newburn Surgery; Newcastle upon Tyne UK
6. Roseworth Surgery; Newcastle upon Tyne UK
7. Darlington Memorial Hospital, County Durham and Darlington NHS Foundation Trust and School of Medicine, Pharmacy and Health; Durham University; Durham UK
8. Primary Care Unit, Department of Public Health and Primary Care; University of Cambridge; Cambridge UK
9. Nuffield Department of Primary Health Care Sciences; University of Oxford; Oxford UK
10. RCUK Centre for Ageing and Vitality; Newcastle University; Newcastle upon Tyne UK