1. Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, United Kingdom
2. Department of Cardiopulmonary Rehabilitation, Centre for Exercise & Health, University Hospital Coventry and Warwickshire National Health Service Trust, Coventry, United Kingdom
3. Warwick Medical School, University of Warwick, Coventry, United Kingdom
4. Centre for Sport, Exercise and Life Sciences, Research Institute for Health & Wellbeing, Coventry University, Coventry, United Kingdom
5. Department of Cardiology, University Hospital Coventry and Warwickshire National Health Service Trust, Coventry, United Kingdom
6. Department of Cardiothoracic Surgery, University Hospital Coventry and Warwickshire National Health Service Trust, Coventry, United Kingdom