1. University of Ioannina,Unit of Medical Technology and Intelligent Information Systems,Dept. of Materials Science and Engineering,GR 45110,Ioannina,Greece
2. University of Ioannina,Biomedical Research Institute - FORTH,Dept. of Biological Applications and Technology,GR 45110,Ioannina,Greece
3. University of Ioannina, Biomedical Research Institute - FORTH,Dept. of Materials Science and Engineering,Unit of Medical Technology and Intelligent Information Systems,GR 45110,Ioannina,Greece