1. Division of Orthopedics and Traumatology, Department of Musculoskeletal Sciences, University Hospitals, Catholic University of Leuven, Leuven, Belgium
2. Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands
3. MIRA Institute for Biotechnology and Technical Medicine, University of Twente, Enschede, the Netherlands
4. Ghent University Hospital, Department of Orthopedics and Traumatology, Gent, Belgium
5. Division of Rheumatology, Department of Musculoskeletal Sciences, University Hospitals, Catholic University of Leuven, Leuven, Belgium