1. Clinical Nursing Research Group, Department of Public Health & Primary Care, University of Cambridge , Robinson Way, CB2 0SR
2. Department of Cardiology, Odense University Hospital , Denmark
3. Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark , J.B. Winsløws Vej 19, 5000 Odense , Denmark
4. Department of Cardiac, Thoracic and Vascular Surgery, Odense University Hospital , J.B. Winsløws Vej 4, 5000 Odens , Denmark
5. Department of Heart Disease, Haukeland University Hospital , Haukelandsveien 22, 5009 Bergen , Norway
6. Department of Clinical Science, Haukeland University Hospital , Jonas Lies veg, 875021 Bergen , Norway
7. Department of Nursing and Caring Science, Western Norway University of Applied Sciences , Inndalsveien 28, 5063 Bergen , Norway
8. School of Nursing & Midwifery, University of Galway, University Road , Galway, Ireland, H91 TK33
9. National Institute of Prevention & Cardiovascular Health (NIPC) , Croí House, Moyola Lane, Newcastle, Galway, H91 FF68 , Ireland