From the Department of Medicine (B.J.W.C., J.G.A., K.A., R.d.K., J.D.S., R.S.B., T.D.R.), Division of Cardiology and Nuclear Medicine, the Department of Radiology (B.J.W.C., R.S.B., T.D.R.), and the Department of Surgery (T.M.), Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, Canada. (2010-05時点)