Michael Law1, Jillian Kratzer1, Irfan Dhalla1. 1. Centre for Health Services and Policy Research, School of Population and Public Health, Faculty of Medicine (Law, Kratzer), The University of British Columbia, Vancouver, BC; Department of Medicine, University of Toronto, Toronto, Ont.; Li Ka Shing Knowledge Institute, St. Michael's Hospital; Institute for Clinical Evaluative Sciences (Dhalla), Toronto, Ont.