1. Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine University of Oulu Oulu Finland
2. Medical Research Center University of Oulu Oulu Finland
3. Department of Applied Physics, Faculty of Science and Forestry University of Eastern Finland Kuopio Finland
4. Clinical Epidemiology Unit, Orthopaedics, Department of Clinical Sciences Lund, Faculty of Medicine Lund University Lund Sweden
5. Paul Scherrer Institut Villigen PSI Switzerland
6. Department of Biomedical Engineering Lund University Lund Sweden
7. Department of Orthopaedics Skåne University Hospital Lund Sweden
8. Rheumatology and Molecular Skeletal Biology, Department of Clinical Sciences Lund, Faculty of Medicine Lund University Lund Sweden
9. Department of Diagnostic Radiology Oulu University Hospital Oulu Finland