1. School of Civil Engineering, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
2. Weierstrass-Institut für Angewandte Analysis und Stochastik, Leibniz-Institut im Forschungsverbund Berlin e. V., Berlin, Germany.
3. Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus.
4. Department of Medical Physics and Biomedical Engineering, University College London, London WC1E 6BT, UK.
5. Department of Radiology, Charité–Universitätsmedizin Berlin, Campus Charité Mitte, Charitéplatz. 1, Berlin, Germany.