1. L Mallery (corresponding author) Centre for Health Care of the Elderly, Queen Elizabeth II Health Sciences Centre, 5955 Veterans’ Memorial Lane, Ste. 2650, Halifax, Nova Scotia, Canada B3H 2E1;
2. Geriatric Medicine Research Unit, Dalhousie University and Queen Elizabeth II Health Sciences Centre, Halifax, Nova Scotia, Canada, and Department of Geriatric Medicine, Cardiff University, Llandough Hospital, Penarth, South Wales, UK
3. Centre for Health Care of the Elderly, Queen Elizabeth II Health Sciences Centre, Halifax, Nova Scotia, Canada
4. Department of Geriatric Medicine, Cardiff University, Llandough Hospital, Penarth, South Wales, UK, and Division of Internal Medicine, Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada