1. Department of Medicine I, University Hospital, LMU Munich , Munich , Germany
2. DZHK (German Center for Cardiovascular Research), Partner Site Munich, Munich Heart Alliance (MHA) , Munich , Germany
3. deCODE Genetics , Sturlugata 8, Reykjavik , Iceland
4. Department of Cardiology, University Heart and Vascular Center, University Medical Center Hamburg–Eppendorf , Hamburg , Germany
5. German Center for Cardiovascular Research, Partner Site Hamburg/Luebeck/Kiel , Hamburg , Germany
6. Atrial Fibrillation Network (AFNET) , Münster , Germany
7. Institute of Cardiovascular Sciences, University of Birmingham , Birmingham , UK