1. Department of Rehabilitation Research, Vrije Universiteit Brussel, Brussels, Belgium, Department of Occupational Therapy, National MS Centre, Melsbroek, Belgium,
2. Department of Occupational Therapy, National MS Centre, Melsbroek, Belgium
3. Department of Neurology, National MS Centre, Melsbroek, Belgium
4. Department of Neurological Rehabilitation, Vrije Universiteit Brussel, Brussels, Belgium