1. Department of Health, Medicine and Caring Sciences Linkoping University Linkoping Sweden
2. Department of Cardiology University Medical Center Groningen, University of Groningen Groningen the Netherlands
3. Julius Center for Health Sciences and Primary Care University Medical Center Utrecht Utrecht The Netherlands
4. Bureau HHM Enschede The Netherlands
5. Department of Cardiology Hospital Group Twente (Almelo and Hengelo) Almelo The Netherlands