1. Clinic for Interventional Electrophysiology, Heart Centre Bad Neustadt, 97616 Bad Neustadt a. d. Saale, Germany
2. Department of Cardiology, Faculty of Medicine, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, 79085 Freiburg im Breisgau, Germany
3. Department of Cardiology and Angiology, Philipps-University Marburg, 35037 Marburg, Germany