1. From the Department of Medicine B, The Heart Center, Rigshospitalet, Copenhagen, Denmark (A.M.G., L.K., K.W.); Department of Medicine, Institution of Public Health and Clinical Medicine, Umeå University, Skelleftå, Sweden (K.B.); Herz-Zentrum Bad Krozingen, Bad Krozingen, Germany (C.G.-B.); Institute of Clinical Medicine, Department of Internal Medicine and Biocenter Oulu, University of Oulu and Clinical Research Center, Oulu University Hospital, Oulu, Finland (Y.A.K.); Department of Cardiology and...