1. Department of Health Science and Technology , Aalborg University , Aalborg , Denmark
2. Pain Research Group, Pain Center , University Hospital Odense , Odense , Denmark
3. Department of Clinical Research, Faculty of Health Sciences , University of Southern Denmark , Odense , Denmark
4. Department of Rheumatology , Aalborg University Hospital , Aalborg , Denmark
5. Department of Clinical Medicine , Aalborg University , Aalborg , Denmark
6. Department of Physiotherapy , University College of Northern Denmark , Aalborg , Denmark