1. IUF – Leibniz Research Institute for Environmental Medicine Düsseldorf 40225 Germany
2. Institute of Neurobiology Heinrich Heine University Düsseldorf 40225 Germany
3. Institute of Biomaterials Department of Materials Science and Engineering Friedrich‐Alexander‐University Erlangen‐Nuremberg Erlangen 91054 Germany
4. Medical Faculty Heinrich Heine University Düsseldorf 40225 Germany