1. Technische Universiteit Delft,Department of Biomechanical Engineering,Delft,The Netherlands
2. Technische Universiteit Delft,Delft Center for Systems and Control,Delft,The Netherlands
3. Erasmus Medical Center,Department of Rehabilitation Medicine,Rotterdam,The Netherlands
4. Rijndam Revalidatie,Department of Pediatric Rehabilitation,Rotterdam,The Netherlands
5. Section Physical Therapy, Erasmus Medical Center,Department of Orthopedics,Rotterdam,The Netherlands