1 University Heart and Vascular Center Hamburg, Department of Cardiology, Germany; German Center for Cardiovascular Research (DZHK), partner site Hamburg/Kiel/Lübeck, Germany; Institute of Cardiovascular Sciences, University of Birmingham, United Kingdom. Electronic address: p.kirchhof@uke.de.
2 Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany; German Center for Cardiovascular Research (DZHK), partner site Berlin, Germany.
3 University Heart and Vascular Center Hamburg, Department of Cardiology, Germany.