1. Department of Neurorehabilitation, Valens Rehabilitation Centre, Valens, Switzerland,
2. ICF Research Branch of the WHO Collaborating Center for the Family of International Classifications at the German Institute of Medical Documentation and Information (DIMDI), Institute of Health and Rehabilitation Sciences, Munich, Germany
3. ICF Research Branch of the WHO Collaborating Center for the Family of International Classifications at the German Institute of Medical Documentation and Information (DIMDI), Institute of Health and Rehabilitation Sciences, Munich, Germany, Department of Physical Medicine and Rehabilitation, Ludwig-Maximilian University, Munich, Germany
4. Department of Brain Repair and Rehabilitation, Institute of Neurology, University College London, London, UK
5. World Health Organization (WHO), Classification, Assessment and Terminology Team (CAS Group), Geneva, Switzerland
6. Department of Physical Medicine and Rehabilitation, Ludwig-Maximilian University, Munich, Germany, Swiss Paraplegic Research (SPF), Nottwil, Switzerland