1. From the Department of Cardiology (I.G., P.T.S., S.E.K., H.A., J.B.), Oslo University Hospital, Ullevaal, Oslo, Norway; Center for Clinical Heart Research (I.G., H.A.), Oslo University Hospital, Oslo, Norway; Department of Cardiology (G.E.), Oslo University Hospital, Rikshospitalet, Oslo, Norway; Department of Informatics (K.L.) and Faculty of Medicine (S.E.K., H.A., J.E.), University of Oslo, Oslo, Norway.