1. Department of Cardiology, Maastricht University Medical Centre, Cardiovascular Research Institute Maastricht , P. Debyelaan 25, 6229 HX Maastricht , The Netherlands
2. Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen , Blegdamsvej 3, 2200 Copenhagen , Denmark
3. Centre for Heart Rhythm Disorders, University of Adelaide, Royal Adelaide Hospital , Port Rd, SA 5000, Adelaide , Australia