1 Department of General Practice, Erasmus University of Rotterdam, Rotterdam, PO Box 2040, 3000 CA Rotterdam, the Netherlands.
2 Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, the Netherlands.
3 Radboud University Medical Centre, Radboud Institute for Health Sciences, IQ Healthcare, Nijmegen, the Netherlands, and Research Group for Musculoskeletal Rehabilitation, HAN University of Applied Sciences, Nijmegen, the Netherlands.
4 Institute of Human Movement Studies, Department of Lifestyle and Health, HU University of Applied Sciences, Utrecht, the Netherlands.
5 Faculty of Earth and Life Sciences, Institute of Health Sciences, VU University Amsterdam, Amsterdam, the Netherlands.
6 The Research Centre for Autonomy and Participation for Persons With a Chronic Illness, Zuyd University of Applied Sciences, Heerlen, the Netherlands.
7 The Research Centre for Autonomy and Participation for Persons With a Chronic Illness, Zuyd University of Applied Sciences.
8 Department of General Practice, Erasmus University of Rotterdam, Rotterdam, the Netherlands.