1. From the Departments of Cardiology (Y.L.G., M.A.K., W.G.W., M.L.F., H.L.H., A.F.M.v.d.H., E.-S.T., G.P., R.v.d.W., S.H.G., I.C.C.v.d.H., B.J.G.L.d.S.) and Critical Care (M.W.N.), Thorax Center, University Medical Center Groningen, University of Groningen, Groningen, and Thoraxcenter, Erasmus Medical Center, Rotterdam (F.Z.), the Netherlands.