1. Department of Mechanical and Aerospace Engineering, UC Davis, Davis, CA, USA
2. Faculty of Medicine & Dentistry, Division of Physical Medicine & Rehabilitation, University of Alberta, Edmonton, Alberta, Canada
3. Glenrose Rehabilitation Hospital, Alberta Health Services, Edmonton, Alberta, Canada
4. Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
5. Faculty of Engineering, Deans Office, University of Alberta, Edmonton, Alberta, Canada