1. Medical Research Unit, Spine Center of Southern Denmark, University Hospital of Southern Denmark, Middelfart, Denmark
2. Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
3. Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
4. Din Kiropraktor, Private Chiropractic Practice, Sorø, Denmark
5. The Chiropractic Knowledge Hub, Odense, Denmark