1. From the Institute for Clinical Evaluative Sciences, Toronto, Canada (K.T., M.D.-H.); University Health Network, Toronto Western Hospital Family Medicine Centre (K.T.); University of Toronto, Canada, Departments of Family and Community Medicine, Family Healthcare Research Unit (K.T.); University of Calgary, Canada, Departments of Medicine and Pharmacology, and Therapeutics (N.R.C.C.); and University of Alberta, Division of General Internal Medicine (F.A.M.), Canada.