1 Department of Cardiology, Oslo University Hospital Ulleval, University of Oslo, Kirkeveien 166, 0450 Oslo, Norway.
2 Medizinische Klinik I, Landshut-Achdorf Hospital, Landshut, Germany.
3 Klinikum der Universität München, Ludwig-Maximilians-Universität and German Centre for Cardiovascular Research (DZHK), partner site Munich Heart Alliance, Munich, Germany.
4 Department of Cardiology and Angiology, University Hospital Tübingen, Tübingen, Germany.