1 Pain in Motion International Research Group, Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Belgium.
2 Chronic pain rehabilitation, Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Belgium.
3 Research Foundation - Flanders (FWO), Brussels, Belgium.
4 Department of Rehabilitation Sciences and Physiotherapy, Faculty of Medicine and Health Sciences, Ghent University, Belgium.
5 Department of Public Health (GEWE), Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium.