1 Pain in Motion International Research Group, Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Belgium; Chronic Pain Rehabilitation, Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Belgium. Electronic address: Jo.Nijs@vub.be.
2 Pain in Motion International Research Group, Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Belgium; Physical Activity, Nutrition and Health Research Group, Department of Movement and Sport Sciences, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Belgium.
3 Physical Activity, Nutrition and Health Research Group, Department of Movement and Sport Sciences, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Belgium.
4 Pain in Motion International Research Group, Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Belgium; Private Practice for Spinal Manual Therapy, Schepdaal-Dilbeek, Belgium.
5 Pain in Motion International Research Group, Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Belgium; Chronic Pain Rehabilitation, Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Belgium.
6 Laboratory for Brain-Gut Axis Studies, Translational Research Center for Gastrointestinal Disorders, Department of Chronic Diseases, Metabolism, and Ageing, KU Leuven, Leuven, Belgium.
7 Pain in Motion International Research Group, Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Belgium; Chronic Pain Rehabilitation, Department of Physical Medicine and Physiotherapy, University Hospital Brussels, Belgium; Research Foundation-Flanders (FWO), Brussels, Belgium.