1. Division of Cardiology, Hospital S. Maria della Misericordia, Perugia, Italy
2. Internal, Vascular and Emergency Medicine - Stroke Unit, University of Perugia, Perugia, Italy
3. Division of Cardiology, S. Matteo degli Infermi Hospital, Spoleto, Italy
4. Department of Medicine, Hospital of Assisi, Assisi, Italy
5. Division of Cardiology and Cardiovascular Pathophysiology, Hospital S. Maria della Misericordia, Perugia, Italy