1. Department of Cardiology, Poole Hospital NHS Foundation Trust, Poole, United Kingdom.
2. Department of Postgraduate Medical Education, Bournemouth University, Poole, United Kingdom.
3. James Cook University Hospital, Middlesbrough, United Kingdom.
4. Defence Medical Services, Lichfield, United Kingdom.
5. Institute for Sport, Physical Activity and Leisure, Leeds Beckett University, Leeds, United Kingdom.
6. Northumbria and Newcastle NHS Trusts, Wansbeck General and Royal Victoria Infirmary, Newcastle, United Kingdom.
7. University of Newcastle, Newcastle upon Tyne, United Kingdom.