Affiliation: | 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 |