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