1. Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands;
2. DSM Biomedical B.V, Geleen, The Netherlands;
3. Department of Clinical Sciences of Companion Animals, Utrecht University, Utrecht, the Netherlands;
4. Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands;
5. Department of Orthopedics, Maastricht University Medical Center Utrecht, Utrecht, the Netherlands