1. Department of Pathological Anatomy, University of Padua; Via Gabelli, 61 35121 Padova Italy
2. Division of Cardiology; University of Padua; Italy
3. Department of Non-invasive Diagnostic Cardiology; San Raffaele Foundation Institute and University Hospital; Milan Italy
4. Department of Cardiology; University of Ferrara and Fondazione S. Maugeri IRCSS; Gussago Brescia Italy
5. Department of Cardiac Surgery; San Raffaele Foundation Institute and University Hospital; Milan Italy