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