1. Chair of Materials Science; Otto Schott Institute of Materials Research; Löbdergraben 32 07743 Jena Germany
2. Aesculap AG; Am Aesculap-Platz; 78532 Tuttlingen Germany
3. Large Scale Structures Group; Neutron Scattering Division; Oak Ridge National Laboratory; Oak Ridge Tennessee 37831 USA
4. Mathys Orthopädie GmbH; An den Trillers Büschen 2; 07646 Mörsdorf Germany