1. Department of Mechanical and Industrial Engineering; University of Toronto; 5 Kings College Rd. Toronto M5S3G8 Canada
2. Toronto Rehabilitation Institute; University Health Network; 550 University Avenue Toronto M5G2A2 Canada
3. Institute of Biomaterials and Biomedical Engineering; University of Toronto; 164 College St. Toronto M5S3G9 Canada
4. Rehabilitation Sciences Institute; University of Toronto; 500 University Avenue, Suite 160 Toronto ON M5G 1V7 Canada
5. Department of Materials Science and Engineering; 184 College Rd. Toronto M5S3E4 Canada