1. Department of Clinical Neuroscience , Rehabilitation Medicine, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg , Sweden
2. Department of Occupational Therapy and Physiotherapy , Sahlgrenska University Hospital, Gothenburg , Sweden
3. Division of Physical Therapy , Department of Rehabilitation Medicine, University of Washington, Seattle, WA , USA
4. School of Physical and Occupational Therapy , Faculty of Medicine and Health Sciences, McGill University, Montreal , Canada
5. Centre for Interdisciplinary Research in Rehabilitation of Greater Montreal , CRIR, Montreal, Quebec . Canada
6. School of Health Sciences , Faculty of Medicine and Health Sciences, University of East Anglia, Norwic h UK