1. Biomedical Engineering, Department of Electrical Engineering, Technical University of Denmark, Ørsteds Plads B349, Kongens Lyngby, Denmark 2800
2. JJ X-Ray A/S, DTU Scion, Science and Technology Park, Technical University of Denmark, Diplomvej B377, Kongens Lyngby, Denmark 2800
3. Laboratory of Biomechanical Design, Division of Human Mechanical Systems and Design, Faculty of Engineering, Hokkaido University, North 13 West 8 North Ward, Sapporo, Japan 060-8628
4. Department of Orthopaedic Surgery, Eniwa Hospital, Kogane-cho 2-1-1, Sapporo, Japan 061-1449
5. Advanced Medicine for Spine and Spinal Cord Disorders, Graduate School of Medicine, Hokkaido University, North 15 West 7 North Ward, Sapporo, Japan 060-8638