1. Biomechanics and Implant Technology Research Laboratory, Department of Orthopedics, University Medicine Rostock, Rostock, Germany
2. Inorganic Functional Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kiel, Germany
3. Faculty of Mechanical Engineering and Marine Technology, Department of Material Science and Medical Engineering, University of Rostock, Rostock, Germany
4. Institute of Medical Microbiology, Virology and Hygiene, University Medicine Rostock, Rostock, Germany
5. Institute of Materials Research, Division Metallic Biomaterials, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany