1 Department of Civil and Environmental Engineering, Politecnico di Milano, Milan, Italy.
2 Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, Italy.
3 Unit of Medical Technology and Intelligent Information Systems, Department of Materials Science and Engineering, University of Ioannina, Ioannina, Greece.
4 Department of Biomedical Research Institute-FORTH, Institute of Molecular Biology and Biotechnology, University of Ioannina, Ioannina, Greece.