1. Department of Cardiovascular Medicine University of Birmingham Birmingham UK
2. Norwich Medical School University of East Anglia Norwich UK
3. Lancashire Cardiac Centre Blackpool Victoria Hospital Blackpool UK
4. Cardiology Department Royal Stoke University Hospital UHNM NHS Trust Newcastle UK
5. Bakken Research Centre Medtronic Inc. Maastricht The Netherlands
6. Department of Cardiovascular Medicine Royal Berkshire NHS Foundation Trust Reading UK
7. Queen Elizabeth Hospital Birmingham Welcome Trust Clinical Research Facility Birmingham UK
8. Department of Cardiovascular Medicine Queen Elizabeth Hospital Birmingham UK
9. Institute of Cardiovascular Science, University College of London London UK