1. Department of Cardiovascular Sciences, Clinic of Cardiology, Ospedali Riuniti, 60100 Ancona, Italy
2. Cardiology Department, Senigallia Hospital, 60019 Senigallia, Italy
3. Department of Cardiology, Camerino-Hospital, 62032 Camerino, Italy
4. Cardiology Unit, Ospedali Riuniti Marche Nord, 61121 Pesaro, Italy
5. O.U. of Cardiology, Ospedale Civile A. Murri, 63900 Fermo, Italy
6. Department of Cardiology, Cardiac Intensive Care Unit, Centre of Telemedicine, Italian National Research Centre on Aging (INRCA), 60127 Ancona, Italy
7. Cardiology Division, Ospedale Provinciale AREA VASTA 3, 62100 Piediripa, Italy
8. U.O.C. Cardiology-Utic Ospedale della Misericordia Urbino AST Pesaro-Urbino, 61029 Urbino, Italy
9. Cardiology Unit, Carlo Urbani Hospital, 60035 Jesi, Italy
10. Istituto di Fisiologia Clinica CNR Pisa, 56124 Pisa, Italy