1 Assistant Professor of Medicine, Division of Cardiology, Department of Medicine, Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Canada, T6G 2R7. Electronic address: doneill@ualberta.ca.
2 Schlegel Research Chair in Geriatric Medicine and Associate Professor, School of Public Health Sciences, University of Waterloo, Waterloo, Ontario, Canada, N2G 3G1. Electronic address: ggheckma@uwaterloo.ca.
3 Professor of Medicine, Division of Cardiology, University of Alberta and Mazankowski Alberta Heart Institute, 8440-112 St, University of Alberta, Edmonton, Alberta, Canada T6G 2B7. Electronic address: mmg2@ualberta.ca.