1. Department of Occupational Therapy, Orthopedic Clinic, Haukeland University Hospital, Bergen, Norway
2. Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway
3. Department of Neurology, Neurologic Clinic, Haukeland University Hospital, Bergen, Norway
4. Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden