1. Faculty of Health and Social Science, Department of Nursing Science, University College of Sør-Trøndelag, Postboks 2320, 7004 Trondheim, Norway
2. Faculty of Medicine, Department of Public Health and General Practice, Norwegian University of Science and Technology (NTNU), Postboks 8905, MTFS, 7491 Trondheim, Norway
3. King’s College London, Florence Nightingale School of Nursing and Midwifery, 57 Waterloo Road, London SE1 8WA, UK
4. St. Olavs Hospital, Trondheim University Hospital, Clinical Service, Postboks 3250 Sluppen, 7006 Trondheim, Norway
5. St. Olavs Hospital, Trondheim University Hospital, Department of Cardiology and Department of Cardiothoracic Surgery, Postboks 3250 Sluppen, 7006 Trondheim, Norway
6. Faculty of Medicine, Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Postboks 8905, 7491 Trondheim, Norway