1. Department of Orthopedic Surgery, Hannover Medical School; NIFE, Lower Saxony Centre for Biomedical Engineering, Implant Research and Development; Stadtfelddamm 34 30625 Hannover Germany
2. Biocompatibility Laboratory BioMedimplant; Stadtfelddamm 34 30625 Hannover Germany
3. Syntellix AG; Aegidientorplatz 2a 30159 Hannover Germany