1 Department of Medicine, Western University and St. Joseph's Health Care, London, Ontario, Canada.
2 Department of Geriatric Medicine, Schlegel-University of Waterloo, Research Institute for Aging; School of Public Health and Health Systems, University of Waterloo, Waterloo, Ontario, Canada.
3 Department of Medicine, Division of Cardiology, Western University and St. Joseph's Health Care, London, Ontario, Canada. Electronic address: [email protected].