1. Clinical Trial Unit, Swiss Paraplegic Center, Nottwil, Switzerland.
2. Swiss Paraplegic Research (SPF), ICF Unit, Nottwil, Switzerland.
3. Department of Health Sciences and Health Policy, University of Lucerne, Lucerne, Switzerland.
4. Spinal Cord Injury Center, Hohe Warte, Bayreuth, Germany.
5. Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada.
6. Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada.
7. Klinik für Paraplegiologie, Universitätsklinikum Heidelberg, Heidelberg, Germany.
8. Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland.