1. From the Latvian Centre of Cardiology (A.E., I.K., I.N., D.S.), Paul Stradins Clinical University Hospital, Riga, Latvia; Division of Cardiology (M.N., M.S., T.M., K.Y.), Department of Internal Medicine, University of Oulu, Finland; Department of Cardiology (M.M., J.F.L., E.H.C., J.R., L.T.), Aarhus University Hospital, Skejby, Aarhus Denmark; Department of Cardiology (P.G., S.S.), The Feiring Clinic, Feiring, Norway; Department of Cardiology (J.S.J., A.G.), Gentofte University Hospital, Gentofte,...