1. From the Department of Medicine, University of Alberta, Edmonton, AB, Canada (R.P.); Mazankowski Heart Institute, Edmonton, AB, Canada (R.P.); Departments of Medicine, Community Health and Cardiac Sciences, University of Calgary, Calgary, AB (D.M.R.); Department of Medicine and Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montreal, QC, Canada (E.L.S.).