1. Department of Cardiology; Heart Centre, Linköping University Hospital; Linköping Sweden
2. Department of Medicine and Care; Faculty of Health Sciences, Linköping University; Linköping Sweden
3. School of Social and Health Sciences, Halmstad University; Halmstad Sweden
4. Department of Medicine; County Hospital Ryhov; Jönköping Sweden
5. Department of Primary Health Care; Göteborg University; Göteborg Sweden