From the Department of Cardiology, University of Oslo, Ullevaal Hospital, Oslo, Norway (S.E.K.); Department of Heart Diseases, University of Bergen, Haukeland Hospital, Bergen, Norway (P.L.-.J.); Department for Clinical Sciences, University of Lund, Malmö, Sweden (P.M.N.); and IRCCS Istituto Auxologico Italiano, University of Milano-Bicocca, Milan, Italy (G.M.).