1. Program in Physical Therapy, Washington University School of Medicine St. Louis Missouri USA
2. Bone and Joint Center Department of Orthopaedic Surgery, Henry Ford Health Detroit Michigan USA
3. Department of Radiology, Henry Ford Health Detroit Michigan USA
4. Department of Radiology University of Michigan Ann Arbor Michigan USA
5. Department of Clinical Medicine Aarhus University Aarhus Denmark
6. Department of Occupational Medicine Aarhus University Hospital Aarhus Denmark