1. Gait and Brain Lab, Parkwood Institute; Lawson Health Research Institute; London Ontario Canada
2. Division of Geriatric Medicine, Department of Medicine, Schulich School of Medicine and Dentistry; University of Western Ontario; London Ontario Canada
3. Department of Epidemiology and Biostatistics; University of Western Ontario; London Ontario Canada
4. Department of Clinical Neurological Sciences; University of Western Ontario; London Ontario Canada
5. Department of Anatomy and Cell Biology; University of Western Ontario; London Ontario Canada
6. Stroke, Dementia and Heart Disease Laboratory; University of Western Ontario; London Ontario Canada
7. Department of Electrical and Computer Engineering; University of Pittsburgh; Pittsburgh Pennsylvania
8. Department of Medicine; Université de Montréal and Montreal Heart Institute; Montreal Quebec Canada
9. Jewish General Hospital Memory Clinic; McGill University; Montreal Quebec Canada