1. Research and Development Unit in Local Health Care and Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
2. School of Health and Welfare, Jönköping University, Jönköping, Sweden
3. Department of Care Science, Malmö University, Malmö, Sweden
4. Department of Medical and Health Sciences, and Department of Cardiology, Linköping University, Linköping, Sweden