1. Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
2. Centre for Clinical Research, Sörmland County Council, Uppsala University, Eskilstuna, Sweden
3. Department of Cardiology, University Medical Centre Groningen, University of Groningen, The Netherlands
4. Department of Cardiology, University Medical Centre Utrecht, The Netherlands
5. Research Group Nursing Diagnostics, School of Nursing, University of Applied Sciences Groningen, The Netherlands