1. Center for Translational Bone, Joint and Soft Tissue ResearchUniversity Hospital Carl Gustav Carus at Technische Universität Dresden 01307 Dresden Germany
2. Center for Orthopaedics and TraumatologyUniversity Hospital Carl Gustav Carus at Technische Universität Dresden 01307 Dresden Germany
3. Medical Clinic I, University Hospital Carl Gustav Carus at Technische Universität Dresden 01307 Dresden Germany
4. Department of Orthopaedic SurgeryStanford University Stanford, CA 94305 USA