1. Biocompatible Nanomaterials, Institute for Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
2. Helmholtz-Zentrum Geesthacht, Institute of Materials Research, Division Metallic Biomaterials, Max-Planck-Str. 1, D-21502 Geesthacht, Germany
3. Functional Nanomaterials, Institute for Materials Science, Kiel University, Kaiserstr. 2, D-24143 Kiel, Germany
4. Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
5. Department of Materials Science and Engineering, Institute of Space Technology Islamabad, 1, Islamabad Highway, Islamabad 44000, Pakistan
6. Institute of Polymer and Composites, Hamburg University of Technology, Denickestr. 15, D-21073 Hamburg, Germany
7. Institute of Inorganic Chemistry, Kiel University, Max-Eyth Straße 2, D-24118 Kiel, Germany