1 Women's College Research Institute, Women's College Hospital, Toronto, ON M5S 1B2, Canada; Department of Medicine and Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, ON, Canada. Electronic address: paula.rochon@wchospital.ca.
2 Women's College Research Institute, Women's College Hospital, Toronto, ON M5S 1B2, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.
3 Division of Geriatric Medicine, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA.