Marni Brownell1, Jennifer Enns2. 1. Manitoba Centre for Health Policy, Department of Community Health Sciences, University of Manitoba, Winnipeg, MB R3E 3P5, Canada. Electronic address: marni_brownell@cpe.umanitoba.ca. 2. Manitoba Centre for Health Policy, Department of Community Health Sciences, University of Manitoba, Winnipeg, MB R3E 3P5, Canada.