1. Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Rheumatology and Clinical Immunology, Germany
2. German Rheumatism Research Centre (DRFZ), a Leibniz Institute, Berlin, Germany
3. Institute of Animal Welfare, Animal Behaviour and Laboratory Animal Science, Department of Veterinary Medicine, Freie Universität Berlin, Germany
4. Office for Animal Welfare and 3R, University of Zurich, Switzerland
5. Dr. Rolf M. Schwiete Research Unit for Osteoarthritis, Department of Orthopaedics (Friedrichsheim), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
6. Departments of Orthopaedic Surgery and Bioengineering, University of Pennsylvania, Philadelphia, PA, United States of America