1. Department of Medical Biotechnologies Division of Cardiology University of Siena Siena Italy
2. Department of Cardiovascular Disease – AUSL Romagna Division of Cardiology Ospedale S. Maria delle Croci Ravenna Italy
3. Institute of Public Health and Clinical Medicine Umeå University and Heart Centre Umeå Sweden
4. Cardiology Unit and LTTA Centre University of Ferrara Ferrara Italy