1. Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway
2. Faculty of Medicine, University of Oslo, Oslo, Norway
3. Department of Psychology, Virginia Commonwealth University, Richmond, VA, USA
4. CHARM (Research Centre for Habilitation and Rehabilitation Models and Services), Faculty of Medicine, University of Oslo, Oslo, Norway
5. Department of Research, Sunnaas Rehabilitation Hospital, Nesoddtangen, Norway
6. Department of Epidemiology and Community Health, Virginia Commonwealth University, Richmond, VA, USA
7. Department of Physical Medicine and Rehabilitation, Sørlandet Hospital, Kristiansand, Norway