1. From the Institute of Medicine (E.G., D.C.), University of Bergen, Bergen, Norway; Department of Heart Disease (E.G., D.C.), Haukeland University Hospital, Bergen, Norway; Department of Medicine (P.M.O., R.B.D.), Weill Medical College of Cornell University, New York, NY; Department of Clinical and Experimental Medicine (G.d.S.), Federico II University Hospital, Naples, Italy; Heart Center (K.W.), Rigshospitalet, Copenhagen, Denmark; and the Department of Medicine (K.B.), Skellefteå Hospital and...