1. Department of Epidemiology; University of Groningen, University Medical Center Groningen; 9700 Groningen The Netherlands
2. Department of Cardiology; University of Groningen, University Medical Center Groningen; Groningen The Netherlands
3. Department of Social and Welfare Studies, Faculty of Health Sciences; Linköping University; Norrköping Sweden
4. Division of Cardiology, Department of Medicine; Helsinki University Central Hospital; Helsinki Finland
5. Department of Anesthesiology and Critical Care Medicine; Lariboisiere Hospital; U942 Inserm, University Paris 7 Diderot France
6. Division of Emergency Care, Department of Medicine; Helsinki University Central Hospital; Helsinki Finland
7. Institute of Health and Wellbeing, University of Glasgow; UK