1. Department of Anaesthesiology and Intensive Care, Multidisciplinary Pain Centre, Vejle and Middelfart Hospitals, University Hospital of Southern Denmark, Denmark, UK
2. Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
3. Department of Psychology, University of Southern Denmark, Campusvej 55, Odense
4. Department of Clinical Research, University of Southern Denmark, Odense, Denmark
5. UCL University College, Odense, Denmark