1 Department of Heart Disease, Haukeland University Hospital, Bergen, Norway Centre on Patient-reported Outcomes, Haukeland University Hospital, Bergen, Norway Department of Clinical Science, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway Institute of Nursing, Department of Health and Social Sciences, University College of Bergen, Bergen, Norway tone.norekval@helse-bergen.no.
2 Department of Heart Disease, Haukeland University Hospital, Bergen, Norway Institute of Nursing, Department of Health and Social Sciences, University College of Bergen, Bergen, Norway.
3 Department of Heart Disease, Haukeland University Hospital, Bergen, Norway Institute of Nursing, Department of Health and Social Sciences, University College of Bergen, Bergen, Norway School of Health and Welfare, Jönköping University, Jönköping, Sweden.