1 KU Leuven Department of Rehabilitation Sciences, 3000 Leuven, Belgium
2 Clinical Motion Analysis Laboratory, University Hospital Leuven, 3212 Pellenberg, Belgium
3 KU Leuven Department of Development and Regeneration, 3000 Leuven, Belgium
4 Department of Orthopedics, University Hospital Leuven, 3212 Pellenberg, Belgium
5 KU Leuven Department of Mechanical Engineering, 3000 Leuven, Belgium
6 KU Leuven Department of Neurosciences, 3000 Leuven, Belgium
7 Department of Neurosurgery, University Hospital Leuven, 3000 Leuven, Belgium