1. Department of Gene Therapy; University of Ulm; Ulm Germany
2. Center for Rehabilitation; RKU - University and Rehabilitation Hospitals Ulm; Ulm Germany
3. University Center of Orthopedics and Traumatology and Center for Translational Bone, Joint and Soft Tissue Research; University Hospital Carl Gustav Carus Dresden, Technical University Dresden; Dresden Germany
4. Department of Orthopedic Surgery, Physical Medicine and Rehabilitation; University Hospital Grosshadern, Ludwig-Maximilians-University Munich; Munich Germany
5. Department of Chemical Engineering; Massachusetts Institute of Technology; Cambridge MA USA