1. Department of Biomedical Engineering, University of Alberta, Edmonton, AB Canada
2. Department of Surgery, Glenrose Rehabilitation Research Centre, University of Alberta, 10105-112 Ave, T5G 0H1, Edmonton, AB Canada
3. Alberta Health Services–Glenrose Rehabilitation Hospital, Edmonton, AB Canada
4. Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, AB Canada