1. Department of Health Studies and Gerontology, University of Waterloo, Waterloo, Ontario, Canada
2. Homewood Research Institute, Guelph, Ontario, Canada
3. Department of Medicine, Division of Geriatrics McMaster University, Hamilton, Ontario, Canada
4. Department of Psychology, University of Waterloo, Waterloo, Ontario, Canada
5. St. Mary’s General Hospital, Kitchener, Ontario, Canada