1. Dr. Rolf M. Schwiete Research Unit for Osteoarthritis, Department of Orthopedics (Friedrichsheim) University Hospital Frankfurt, Goethe University Frankfurt/Main Frankfurt Germany
2. Department of Pediatrics and Adolescent Medicine, Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
3. Center for Rare Diseases University Hospital Cologne, University of Cologne Cologne Germany
4. Center for Family Health Faculty of Medicine and University Hospital Cologne, University of Cologne Cologne Germany
5. Cell Biology Laboratories, School of Biochemistry, Faculty of Life Sciences University Walk, University of Bristol Bristol UK
6. Biochemistry Unit, Department of Molecular Medicine University of Pavia Pavia Italy
7. Department of Biomedical Engineering The City College of New York New York NY USA
8. Institute of Human Genetics, Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
9. Department II of Internal Medicine, Faculty of Medicine and University Hospital Cologne University of Cologne Cologne Germany
10. Center for Molecular Medicine Faculty of Medicine and University Hospital Cologne, University of Cologne Cologne Germany
11. Institute of Biochemistry University of Cologne Cologne Germany
12. Colzyx AB Lund Sweden