1. Department of Physiotherapy, BZG Bildungszentrum Gesundheit Basel-Stadt, Munchenstein, Switzerland
2. Health Division, Bern University of Applied Science, Bern, Switzerland
3. Caphri Research School, Maastricht University, Maastricht, the Netherlands
4. Department of Anatomy and Embryology, Maastricht University, Maastricht, the Netherlands
5. Department of Epidemiology, Maastricht University, Maastricht, the Netherlands