1. Department of Orthopaedic Surgery, Aalborg Universitetshospital, Syd, Hobrovej 18-22, 9000 Aalborg, Denmark
2. Department of Clinical Medicine, Aalborg University, Fredrik Bajers Vej 5, 9100 Aalborg, Denmark
3. Region Nordjylland, Røntgenfysik, Merkurvej 13, 9700 Brønderslev, Denmark
4. Department of Mathematical Sciences, Aalborg University, Skjernvej 4A, 9220 Aalborg Øst, Denmark