Unit of Medical Technology and Intelligent Information Systems, Dept, of Materials Science and Engineering, University of Ioannina, GR 45110, Ioannina, Greece.|Unit of Medical Technology and Intelligent Information Systems, Dept, of Materials Science and Engineering, University of Ioannina, GR 45110, Ioannina, Greece.|Unit of Medical Technology and Intelligent Information Systems, Dept, of Materials Science and Engineering, University of Ioannina, GR 45110, Ioannina, Greece.|Unit of Medical Technology and Intelligent Information Systems, Dept, of Materials Science and Engineering, University of Ioannina, GR 45110, Ioannina, Greece.|Unit of Medical Technology and Intelligent Information Systems, Dept, of Materials Science and Engineering, University of Ioannina, GR 45110, Ioannina, Greece.