1. Department of Medical Sciences Cardiology Uppsala University Uppsala Sweden
2. Uppsala Clinical Research Center Uppsala University Uppsala Sweden
3. Department of Medicine Hospital of Assisi Italy
4. Department of Medicine University of Perugia Italy
5. Department of Cardiology Maggiore Hospital Bologna Italy
6. Department of Cardiology and Cardiovascular Pathophysiology University of Perugia Perugia Italy
7. Population Health Research Institute Hamilton Ontario Canada
8. Thomas Jefferson Medical College and the Heart Center Wynnewood PA