1. Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos,” 15341 Athens, Greece
2. School of Electrical and Computer Engineering, National Technical University of Athens, 15780 Athens, Greece
3. Nuclear Medicine Unit, Oncology Clinic “Marianna V. Vardinoyiannis—ELPIDA,” Childrens’ Hospital “A. Sofia,” 11527 Athens, Greece
4. Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany
5. Bernstein Center for Computational Neuroscience, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany
6. Potsdam Institute for Climate Impact Research, Telegrafenberg A 31, 14473 Potsdam, Germany