1. Department of Cardiovascular Medicine, National Heart and Lung Institute, Imperial College London, London, UK
2. Department of Public Health, University of Ghent, Ghent, Belgium
3. Institute of Clinical Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
4. Department of Internal Medicine, University Hospital Center Zagreb, Zagreb, Croatia
5. Institute of Epidemiology and Social Medicine, University of Münster, Münster, Germany