1. Department of Heart Disease, Haukeland University Hospital, Norway
2. Center for Health Services and Nursing Research, University of Leuven, Belgium
3. Institute of Nursing and Health Research, Ulster University and Belfast Health and Social Care Trust, UK
4. Centre for Cardiovascular Sciences, University of Birmingham, UK
5. Sandwell and West Birmingham Hospitals National Health Service Trust, UK
6. Department of Cardiology and Department of Medical and Health Sciences, Linköping University, Sweden
7. San Filippo Neri Hospital, Italy
8. Department of Clinical Science, University of Bergen, Norway