1. Department of Physical Medicine and Rehabilitation, Oslo University Hospital Oslo Norway
2. Department of Psychology, Faculty of Social Sciences, University of Oslo Oslo Norway
3. Department of Research, Sunnaas Rehabilitation Hospital Nesoddtangen Norway
4. Institute of Clinical Medicine, Faculty of Medicine, University of Oslo Oslo Norway
5. Center for Habilitation and Rehabilitation Models and Services (CHARM), Institute of Health and Society, University of Oslo Oslo Norway
6. Philadelphia Research and Education Foundation Philadelphia PA USA
7. Nursing Service, Department of Veterans Affairs Medical Center Philadelphia PA USA