1. Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
2. Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine, Teltow and Berlin, Germany
3. Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
4. Institute of Chemistry, University of Potsdam, Potsdam, Germany