1. Department of Cardiology—ElectrophysiologyUniversity Hospital Hamburg, University Heart Center HamburgHamburg Germany
2. Department of Cardiovascular SurgeryUniversity Hospital Hamburg, University Heart Center HamburgHamburg Germany
3. Department of Cardiology—ElectrophysiologyUniversity Hospital CologneCologne Germany
4. Department of Medical BiometryInstitute of Medical Biometry and Epidemiology, University Hospital HamburgHamburg Germany
5. Department of Cardiology—ElectrophysiologyUniversity Hospital MainzMainz Germany
6. DZHK (German Center for Cardiovascular Research)Partner Site Hamburg/Kiel/LübeckBerlin Germany