1. Department of Developmental BioEngineering, Faculty of Science and Technology, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, the Netherlands.
2. Heisenberg-Group for Molecular Skeletal Biology, Department of Trauma-, Hand- and Reconstructive Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
3. Nanobiophysics Group, Faculty of Science and Technology, MESA+Institute for Nanotechnology, University of Twente, Enschede, the Netherlands.
4. Department of Tissue Regeneration, Faculty of Science and Technology, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, the Netherlands.
5. Departments of Orthopedic Surgery and Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota.