1. Centre de recherche sur le vieillissement, Sherbrooke, Quebec, Canada
2. School of Rehabilitation, Faculty de medicine and health sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
3. Centre de recherche du CHUS, Sherbrooke, Quebec, Canada
4. Department of Neurosurgery, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada