1. Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
2. Instituto Nacional de Geriatría, Mexico City, Mexico
3. Centro de Investigación en Ciencias de la Salud (CICSA), FCS, Universidad Anáhuac México Campus Norte, Huixquilucan Edo. de México
4. Department of Health Sciences, Lakehead University Thunder Bay Campus, Ontario, Canada
5. Department of Community Health and Epidemiology, Dalhousie University, Halifax, Nova Scotia, Canada
6. School of Physiotherapy, Dalhousie University, Halifax, Nova Scotia, Canada