1. Cardiothoracovascular Department, Division of Cardiology University of Trieste Trieste Italy
2. Department of Medical Sciences, Biostatistics Unit University of Trieste Trieste Italy
3. Postgraduate School in Cardiovascular Sciences University of Trieste Trieste Italy
4. Department of Cardiology Zuyderland Medical Centre Heerlen The Netherlands
5. Department of Cardiology Maastricht University Medical Centre Maastricht The Netherlands
6. Cardiovascular Research Institute Maastricht (CARIM) Maastricht The Netherlands