1. Cardiothoracic Department; Plymouth Hospitals NHS Trust; Terrance Lewis Building, 9th Floor, Derriford Hospital, Plymouth Hospitals NHS Trust, Derriford Road, Crownhill, Plymouth Devon PL6 8DH UK
2. Peninsula Medical School; University of Exeter; Exeter UK
3. Health Sciences Research Institute, Warwick Medical School; Coventry UK
4. Cardiac and Pulmonary Rehabilitation; Glenfield Hospital; Leicester UK
5. Faculty of Medicine; University of Sydney; Sydney Australia
6. Department of Epidemiology and Population Health; London School of Hygiene and Tropical Medicine; London UK
7. The Hatter Institute; University College London Hospital NHS Trust; London UK