Carsten W Israel1, Michael Glikson2, Jens Cosedis Nielsen3. 1. Department of Cardiology, Bethel-Clinic, University of East-Westphalia, Burgsteig 13, 33617 Bielefeld, Germany. 2. Jesselson Integrated Heart Center Shaare Zedek Medical Center and Hebrew University Faculty of Medicine, PO Box 3235, Jerusalem 9103102, Israel. 3. Department of Clinical Medicine and Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark.