1. Division of Electrophysiology, Heart Center Dresden, Technische Universität Dresden , Fetscherstr. 76, 01307 Dresden , Germany
2. Department of Electrophysiology, Heart Center, University of Leipzig , Strümpellstr. 39, 04289 Leipzig , Germany
3. Department of Pediatric Cardiology, Heart Center, University of Leipzig , Strümpellstr. 39, 04289 Leipzig , Germany
4. Department of Therapy Specialists, Electrophysiology, Abbott Medical GmbH , Helfmann-Park 7, 65760 Eschborn , Germany