1. Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
2. Spinecenter of Southern Denmark, Lillebaelt Hospital, Middelfart, Denmark
3. Institute of Regional Health Science, University of Southern Denmark, Odense, Denmark
4. Nordic Institute of Chiropractic and Clinical Biomechanics, Odense, Denmark
5. Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Canada