1. Department of Cardiology, Maastricht University Medical Centre and Cardiovascular Research Institute Maastricht, 6202 AZ Maastricht, The Netherlands
2. Department of Cardiology, Radboud University Medical Centre, Nijmegen, The Netherlands
3. Centre for Heart Rhythm Disorders, University of Adelaide, Royal Adelaide Hospital, Adelaide, SA, Australia
4. Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
5. Department of Cardiology, Martini Hospital, Van Swietenplein 1, 9728 NT Groningen, The Netherlands