1. Unit of Medical Technology and Intelligent Information Systems, University of Ioannina,Dept. of Materials Science and Engineering,Ioannina,Greece,GR 45110
2. Cardiomyopathy Unit, Careggi University Hospital,Florence,Italy
3. Unit of Medical Technology and Intelligent Information Systems, University of Ioannina, FORTH-IMBB,Dept. of Materials Science and Engineering, Dept. of Biomedical Research,Ioannina,Greece,GR 45110